Authorization is one of laravel security features, it provides a simple way to authorize user actions, in this tutorial we’ll use this feature to implement roles and abilities logic.
Content:
Installation
Clone the repository
Install composer dependancies
composer install
Create .env file
cp .env.example .env
Generate application key
php artisan key:generate
Set database connection environment variable
Run migrations and seeds
php artisan migrate --seed
Following are super user default credentials
email: super@example.com, password: secret
Following are demo user defaul credentials
email: user@example.com, password: secret
Models
Role model will group the abilities that will be granted to related users.
<?phpnamespaceApp;
useIlluminate\Database\Eloquent\Model;
classRoleextendsModel
{
/** * The attributes that are mass assignable. * * @var array */protected$fillable = [
'name',
];
/** * The users that belong to the role. */publicfunctionusers()
{
return$this->belongsToMany('App\User');
}
/** * The abilities that belong to the role. */publicfunctionabilities()
{
return$this->belongsToMany('App\Ability');
}
}
Ability model represent the actions that needs to be authorized.
<?phpnamespaceApp;
useIlluminate\Database\Eloquent\Model;
classAbilityextendsModel
{
/** * The attributes that are mass assignable. * * @var array */protected$fillable = [
'name',
];
/** * The roles that belong to the ability. */publicfunctionroles()
{
return$this->belongsToMany('App\Role');
}
}
Controllers
To authorize controller actions we use authorize helper method which accept the name of the ability needed to perform the action.
UserController and RoleController handles management of users and roles including relating users to roles and roles to abilities, the logic is simply made of crud actions and eloquent relationship manipulation.
Views
To display only the portions of the page that users are authorized to utilize we’ll use @can and @canany blade directives.
Seeders
AbilitySeeder contain an indexed array of strings where each element is an ability, when exceuted it will sync the abilties in the database.
Whenever the abilities are modifed run the following command to sync the database.
php artisan db:seed --class AbilitySeeder
SuperUserSeeder will create a super user using credentials provided in config/auth.php which can be set using AUTH_SUPER_USER_EMAIL and AUTH_SUPER_USER_EMAIL environment variable, super user surpass authorization logic hence he’s granted all abilities.
Whenever the super user need to be changed, update the correspoding environment variable and run the following command which will delete the current super user and create a new one.
php artisan db:seed --class SuperUserSeeder
Authorization
The authorization take place in AuthServiceProvider, where we use Gate::before method to intercept gate checks then we verify if the user is super or is granted the ability through any of his roles.
Laravel has a lot to offer, having a general idea about what’s provided help in finding the best solution, in this tutorial we’ve used Authorization and Seeders as the base of the roles and abilities system.
Synology announces the DS1621xs+, a high-end network attached storage device
https://ift.tt/2DNHTeJ
Expand your network storage to up to 96 terabytes with ultra-fast read and write speeds with Synology’s new DS1621xs+ network-attached storage device.
The DS1621xs+ was designed to meet the growing need of at-home workers. The small size fits in well in nearly any workspace, and the quad-core Xeon processor, user-upgradeable ECC memory, and onboard 10-gigabit Ethernet paired with two Gigabit Ethernet ports provide high-performance data storage, container solutions like Docker, and file management.
It boasts 3.1Gbps read and 1.8 Gbps write speeds, making it a perfect solution for power users or larger data sets from multiple users. A pair of M.2 slots provide for fast caching.
Beyond the PCI-E x8 slot internal to the device, three USB 3.1 type A ports allow for external expansion.
Inside the DS1621xs+ are six internal 3.5-inch bays, which allow for up to 96 terabytes of storage. Should users need more space, it can expand to 256 terabytes of storage by adding on two additional DX517 expansion units for a total of 16 bays.
The DS1621xs+ is available from B&H Photo for $1599.99 with no drives, and is expected to ship within two weeks.
AppleInsider has previously reviewed a Synology NAS — the DS-1618+ — and gave it a 4 out of 5, praising its impressive power to price ratio.
In the attached video, you will see two variations of this firearm. The first is the M&P Pro Series with the extended barrel as well as fiber-optic sights.
The second is a modified duty-length weapon with a replacement slide and barrel, both by Faxon, as well as an Apex Forward Reset trigger group.
Neither of these modifications changes the method of cleaning. The only thing, as you will see in the video, is the tread protector on the threaded barrel may stick and require a tool to remove.
Seeing as I had a second gun, I simply showed the process on the non-threaded barreled gun. This process also works across all the different calibers of the Smith and Wesson M&P.
is: be safe. As such, each gun must have the magazine removed and the chamber checked before any further work is done.
That being said, here are the steps involved in cleaning a Smith and Wesson M&P:
Step 1: Takedown
The next step, after assuring the gun is unloaded, is to lock the slide back and to use a tool to manipulate the takedown wire inside the magwell.
With this moved into place, the takedown lever must be moved into the vertical position, then the slide can be removed.
With the slide off, the captive recoil spring is removed next. Then the barrel will easily slip out as well.
This is the extent to which the gun should be broken down for routine cleaning. There is no need to break down the frame components or the trigger assembly unless a failure has happened. The firearm can be cleaned and lubricated like this.
Step 2: Cleaning
The barrel is the largest area in need of cleaning. The chamber area and the lands and grooves often are the most caked with carbon. With this in mind, I run a wet patch or mop over those areas with my cleaner or carbon cutter.
In the video, I use Kroil, as I find it to be a quality cleaner, especially for routine work.
I prefer drip or soak applicators that are designed for cleaning, as opposed to items like G-96 that act as a cleaner, lubricant and protector rolled into one.
For deep cleaning, single-purpose cleaners are better. For solid lubrication, dedicated lubricants are also better.
CLP products like G-96 are great for light cleaning, as well as for things like a carry gun that is not shot a lot, but needs frequent removal of dust and reapplication of lubricant and sweat protection.
They are also great when an aerosol is needed to reach the recesses of a firearm or to blast away accumulated fuzz and dust.
This may be overkill, but it works for me. Another point that many will see as overkill is my unwillingness to run anything other than a patch or mop in the opposite direction of bullet travel.
In the video, I pointed this out and even did so with the wet patch. I do not always honor this with a wet patch, as the point is to ensure the surface is wet and there is no damage potential from grinding of grit or the brush across the rifling.
With brushes (even nylon), I only push them through in the direction the bullet travels. This greatly decreases potential wear from the brush or the grit embedded in it.
It also keeps all dirt and debris moving away from the action.
When I use a wet patch and it does not come out terribly dirty, I will use that patch for cleaning the exterior of the barrel, the recoil spring and other areas until it accumulates too much carbon or dirt.
I am frugal, and patches and cleaner are not free. Additional wet patches can be used, as needed. One for the barrel and one for the frame is common on a lightly-shot gun.
Using several per major component is not uncommon for a well-fouled firearm.
A specific area many people miss on the Smith and Wesson M&P is the spring inside the magwell. A quick pass with a cleaner-soaked patch will loosen any grime.
Just be sure to lubricate it after the cleaning is done. This is best done with another wet patch soaked in lube.
As mentioned earlier, I start by soaking the inside of the barrel first. After I have cleaned the rest of the firearm, I return with the brush to work on the inside of the barrel.
This allows the cleaner time to act on deposits and simplifies the cleaning process. The fewer strokes taken with a brush, the less likely you are to damage the rifling.
Also, why work hard when you can work smart. It is also useful to use a roller-bearing rod for use with the brush. This allows the brush to follow, instead of fight, the rifling.
By following the rifling, you get a better cleaning action as well as reduce wear.
The last step of cleaning is to remove the cleaner, which will pick up any debris missed by the previous passes. I always remove the cleaner prior to applying the lubricant, as the cleaner will dilute the utility of the lubricant if left in place.
Step 3: Lubrication
Lubricants vary in their purpose. Some are very light and evaporate quickly. Some are designed to be thicker and last longer. The first type is great for frequent reapplications, like CLP products.
Many of the second type stay around longer, but tend to attract dust and grit if used on high-use items like carry guns.
I have found a product that has low evaporative qualities, great adherence (it stays even when wiped off) and low attraction to dust and grime when applied thinly.
This product is AWT Extreme Force Lube. It can be applied thicker in guns that like to be run wet (AR’s) without too much run or creep, and as a full-synthetic, it is very good in high-temperature environments.
I like to use a needle applicator so I can limit the film depth and to get into the recessed areas like the trigger springs and the firing pin assembly.
On the Smith and Wesson M&P, lube needs to be applied to the entire exterior of the barrel. It should also be applied to the rails and groves of the slide, the recoil spring and the above-mentioned areas.
The lube should not be left “wet”. The gun requires a light film; so, after applying the lube, a wipe with a clean patch is great to spread it out and leave a thin layer.
I apply drops to the slide rail areas and cycle the action to distribute the lube there.
Step 4: Reassembly and Function Check
Reassembly of the gun is done in the reverse order of takedown. The barrel is mounted into the slide. The captive recoil spring is fitted to the barrel and slide.
The slide is slipped back onto the frame rails and put back to the slide lock location. The takedown lever is moved into the horizontal position.
Then, after dropping the slide lock, cycle the action several times to ensure proper function. Dry fire the gun, install a magazine and make sure a round will chamber.
If both the dry fire and the chambering work, the gun is back to being functional and clean.
How do you clean your firearms? Let us know in the comments section below!
Varbox – FREE Laravel admin panel for businesses & freelancers
https://varbox.io
Is there a free version of the Varbox platform?
Yes!
To get started you just need to download a free release.
The free version is under the MIT license so it can be used for commercial purposes.
I’m stuck! Where can I ask questions?
If you have Varbox specific problems or questions, you can use our Github Issues repository, or search for help on Stackoverflow
What do I get by purchasing a license?
A unique license code.
Using that license code will give your project legal permission to use the paid version of Varbox for commercial purposes.
Your invoice will contain the unique license code and instructions on where to place it, after payment.
Can I get discounts for buying licenses?
Yes!
Depending on your requirements, you should get in touch with us for volume discounts or a lifetime commercial license for unlimited projects.
How long does one Varbox license last?
The Varbox commercial license lasts for ever!
Also, you can update to any release of Varbox for that project without any additional costs.
Does it cover local / testing / staging environments?
Yes!
For your staging server, please use the same licese code you’ll be using on your production domain.
On localhost you don’t need a license code at all.
What is considered to be a “project”?
A project is a single installed instance of Varbox.
You may not use a single Varbox license for multi-tenant websites where there’s multiple copies of Varbox running.
Each of those are considered separate projects and require their own license.
Breaking Down the Spice, Worms, and Pain Boxes in Dune’s First Trailer
https://ift.tt/2GBa5SX
It’s finally here. We’ve been waiting months to see a (moving) look at Denis Villeneuve’s long-awaited adaptation of Frank Herbert’s classic sci-fi novel Dune. The debut trailer showed a beautiful but dangerous world on the brink of destruction and gives several hints that you may have missed on first viewing. Allow us to dig a little deeper.
The trailer opens on a close-up of Paul Atreides, the protagonist of Dune, squinting at something in the distance. Played by Timothée Chalamet, Paul is the only son of Lady Jessica (Rebecca Ferguson), a member of the Bene Gesserit order, and Duke Leto Atreides (Oscar Isaac). Not only is he set to inherit his family’s wealthy empire, he’s also spent years training with his mother in the Bene Gesserit ways of body and mind control.
G/O Media may get a commission
It’s no surprise his first words in the trailer are: “Something is happening to me. There’s something awakening in my mind, I can’t control it,” as the story is about him awakening into his physical and metaphysical powers.
We then see the focus of Paul’s vision: Chani (Zendaya), a Fremen warrior who appears as an ethereal figure welcoming the desert sun. Her eyes are bright blue because of her longtime exposure to melange, a rare spice that grows on her home planet of Arrakis.
“There’s a crusade coming.” The vision of Chani is important, but it’s not the only vision of the future he’s talking about here. There’s also Paul’s warning of a future “crusade,” though he never explains what that means.
Calling it a crusade is a very interesting choice, and likely intentional. The book contains several references to global conquests called “jihads”—whether it’s jihads that happened in the distant past or a future connected to Paul, Arrakis, and the fate of the universe. The word can easily inspire racist connotations in 2020 so it makes sense that it would be swapped out. But the use of crusade feels poignant, with its connection to colonialism, white supremacy, and the forcible spread of religious ideology across great distances. Given the role Paul plays in this story and world, it doesn’t seem like a coincidence.
We then cut to a shot of two people in the shadows—likely Paul Atreides and Lady Jessica, based on the hair and outfits—as they look over a scene of immense damage and chaos. This could be the “crusade” that Paul is worried about, or it could be a sign of even darker things to come.
“The test is simple.” Paul Atreides subjects himself to the pain box, a test that the Bene Gesserit use to determine which people have risen above their base animal instincts to become “truly human.” The idea is that a lesser creature would “gnaw off his own leg to survive,” meaning they would choose instinct over self-control and discipline. Reverend Mother Gaius Mohiam, the leader of the Bene Gesserit, points a deadly needle called a gom jabbar at Paul’s throat and orders him to endure the pain inside the box or she will kill him. Based on his screams, that’s pretty hard to do!
“You’ve inherited too much power.” We get a glimpse of Paul on his home planet of Caladan as he’s getting ready to leave for Arrakis. Caladan is a rich, lush planet with lots of rain and vast oceans. In many ways, it’s the opposite of Arrakis, representing how much this relocation will change the rest of his life.
Paul trains with Gurney Halleck (Josh Brolin), a chief officer for Duke Atreides and Paul’s weapons teacher. He’s considered one of the best fighters in the universe and trains the young man in hand-to-hand combat techniques. Most people also wear personal defensive shields, which you can see being activated in this shot, and battles are often conducted with knives, swords, and other melée weapons. Guns are rarely used in the world of Dune because of the aforementioned shields. However, it’s important to note that shields cannot be used in the deserts of Arrakis because they attract certain creatures.
“You’ve proven you can rule yourself, now you must learn to rule others.” This message presumably comes after Paul has endured the box test, which means the Reverend Mother believes he can lead other people. However, her words come with a warning, saying that the art of ruling others is something “none of your ancestors learned.” That’s when we get our first glimpse at Duke Leto, Paul’s father.
Duke Leto is glancing at an ancient Grecian tablet showing a man and a bull, possibly readying for a sacrifice. House Atreides has long claimed its origins date back to ancient Greece, specifically the Greek mythological figure King Agamemnon (a son of King Atreus, hence the name). By drawing a dark parallel between then and now, we’re seeing that House Atreides has been, and may continue to be, on unsteady ground.
More shots of Caladan, giving off some Game of Thrones vibes along with clearly Grecian design.
As the Reverend Mother warns Paul that he will lose Arrakis just as he’s losing Caladan, we’re introduced to Lady Jessica, being comforted by Duke Leto as they prepare to leave. We mentioned Lady Jessica is a member of the Bene Gesserit order, they are a society of women who’ve spent generations accumulating power throughout the universe. But what’s also true is that Lady Jessica herself is a huge player in the events of Dune, with her choices impacting the future of the entire universe. In these shots, she’s the bridge between Caladan and Arrakis, as we see her transition from her old home to her new one. This hints at the vital part she plays in the story, as the bridge between Paul’s two worlds. Sadly, we don’t hear her actually speak in the trailer, though.
A haunting rendition of Pink Floyd’s “Eclipse,” from composer Hans Zimmer, starts to play while House Atreides arrives on Arrakis and is welcomed by the soldiers already stationed there—including a warm, friendly hug from Duncan Idaho (Jason Momoa), who was sent ahead to scout the planet. We also get a glimpse of House Atreides’ Mentat, Thufir Hawat (Stephen McKinley Henderson). He’s the guy with the fancy umbrella. We’ve explained Mentats further down.
A brief glimpse of Stilgar (Javier Bardem), a Naib (or leader) of one of the Fremen tribes, as he takes off his mask in the middle of the desert. He’s wearing a stillsuit, the standard outfit created for survival on Arrakis. It extracts water from the body (including sweat, respiratory droplets, and urine), filters it, and stores it in a pouch so it can be consumed later.
We finally see the famous Baron Harkonnen (Stellan Skarsgård)—the main villain of this story—telling his brutish nephew Glossu (Dave Bautista) to “kill them.” Baron Harkonnen is an evil mastermind who’s as cunning as he is gluttonous. It’s unclear where he is during this moment: He’s likely on his home planet of Giedi Prime, but he could be on Arrakis, based on the architecture behind Glossu.
Glossu’s role looks to have been expanded for the film. Much of his work in the book tends to happen “offscreen,” but here’s he’s at the forefront of the fight on Arrakis. With a massive army of soldiers at his command. Plus, if you take a closer look at the army, you might spot a figure in the back—that’s likely the Baron himself, on the suspensors (floating harnesses) he uses to get around.
We immediately cut to Glossu unleashing his weapon as a group of soldiers march on Arrakis, surrounded by burning trees. A war has begun.
“They’re picking my family off one by one.” Duncan Idaho gets ready to push back against the invasion, keen on having them fight “like demons.” Some of this fight is in his stillsuit and some is in normal clothes, so I’m guessing it’s two different battles.
Paul meets Chani for the first time, out in the desert. He recognizes her from his dream, but the stern look on her face here shows she’s much more than the otherworldly vision he’s been dreaming about.
More of the attack on Arrakis. None of the fighters, including Gurney, are in battle gear, which indicates it took them by surprise.
Nothing much to say about this, other than I fully expect weird Baron Harkonnen vibes in this movie.
Duncan and Paul share a salute, though these shots look to be taking place at two different times. Paul is wielding a crysknife, which is a blade made from the tooth of a dead sandworm, the weapon of choice for the Fremen; they are sacred and forbidden to those outside of the tribe.
It’s important to note that during this moment, the Reverend Mother is telling Paul Atreides about a “legend” who must one day be born, as all of civilization will depend on him. This is in reference to the Kwisatz Haderach, a long-prophesied hero who would rise up and rule the universe. The legend as well as the Bene Gesserit’s role in making him a reality, would take too long to explain: I’ve written out an explanation of the prophecy, which you can check out here.
Oh hey, it’s one of those creatures… devouring an entire ship. This is our first moving look at a sandworm of Arrakis, and it looks mighty imposing.
We get shots of Dr. Wellington Yeuh (Chang Chen) with some of Baron Harkonnen’s soldiers, as well as Chani’s mother and Arrakis planetologist Liet Kynes (Sharon Duncan Brewster) at the palace on Arrakis.
We catch a brief (albeit fuzzy) glimpse at ornithropters, helicopter-like machines that are commonly used for travel. You might notice the name comes from ornithology, or the study of birds, and that it looks like a dragonfly. That’s because thousands of years before the events of Dune, the galaxy unilaterally rejected artificial intelligence technology—shunning anything that could replace the intelligence or capabilities of a person. There are no A.I. computers in the world of Dune and everyone relies on people called Mentats trained to serve as “human computational devices.” In addition, many devices and transports are modeled after organic life, or as close to it as can be achieved.
Duke Leto Atreides briefly comforts someone as they lay dying, leaving a bloody handprint on his shirt. He looks concerned and confused, which is kind of the mode du jour for most of House Atreides during the attack.
“The future, I can see it.” Paul is revealing to Stilgar that there’s something powerful inside of him, even if others like Reverend Mother may or may not believe he’s the Kwisatz Haderach who’s been prophesied. This revelation comes as he prepares to fight someone in the desert using the crysknife. It looks like the Fremen warrior Jamis (Babs Olusanmokun), who opposes Paul coming into the tribe.
“I must not fear.” Paul screams as something strange overpowers him, then we see Paul and Lady Jessica take an ornithopter into a sandstorm. The two of them spend much of the story together, surviving the desert while trying to find the Fremen. Through all of this, Lady Jessica continues to train Paul in the Bene Gesserit ways of controlling one’s body, mind, and voice, rejecting fear in all of its forms to maintain a sense of order in the chaos.
“Fear is the mind-killer.” Paul reminds us of his Bene Gesserit training as he reaches down into the sand, discovering what this whole story it’s all about—the Spice. In the world of Dune, the spice known as “melange” is a required element for interstellar travel. Fish-like creatures called Guild Navigators use the spice to “see” their way through the galaxy, guiding ships from one destination to another. The only place the spice can be found is on Arrakis, making the desert planet the most valuable spot in the universe.
“My lord duke,” Duncan Idaho addresses Paul in a new way, as Paul looks on with a calm authority that ensures he understands everything this means.
“When the fear is gone, only I will remain.” Just as Paul was embraced by Duncan Idaho, we also see Paul, with a bloody nose, being embraced by the Fremen. This shows his rise in power with House Atreides and the Fremen, as Paul becomes a force to be reckoned with on Arrakis.
We close on Paul and someone else, most likely Lady Jessica (based on the shawl), running away from a giant sandworm alone in the desert. But then, something happens.
The worm stops. This is a big freaking deal. The sandworms of Arrakis are adept killers, sweeping the sands in search of anyone making a sound. They also have a powerful connection to Arrakis that gets explained further along in the story. To have the sandworm stop to gaze upon anyone is, well, mind-blowing. Even a creature like this knows something’s different about Paul Atreides. Soon, the rest of the world will know too.
Dune arrives in theaters on December 18.
For more, make sure you’re following us on our Instagram @io9dotcom.
U-Haul Introduces Armored War Rigs For Californians Trying To Flee State’s Post-Apocalyptic Wasteland
https://ift.tt/3m28AxD
U-Haul Introduces Armored War Rigs For Californians Trying To Flee State’s Post-apocalyptic Wasteland
CALIFORNIA—To help meet the demand of millions of people desperately trying to escape the dark, ravaged wasteland of California, U-Haul is introducing a new product in it’s moving van line-up: the War Rig. These weaponized, armored moving vehicles will ensure you and your belongings stay safe during the long and perilous journey out of the state.
“We knew it was time to introduce some more serious vehicles to our fleet,” said local U-Haul franchise owner Glax Destroyer, who manages 12 locations in Southern California. “We brought in the War Rig to supplement our completely depleted fleet of moving vans. With everyone leaving in droves, we don’t have much left. We’re pretty much salvaging old trucks from the junkyard and then adding armor plating and mounted weapons.”
Sources confirm that each War Rig will comfortably seat a traditionally-sized California family of one person. They boast a fuel economy of 6 miles per gallon of guzzoline, which the U-Haul location will provide.
Mr. Destroyer encourages customers to come early to secure their rigs before his power goes out and everything bursts into flames.
Breaking: PayPal Now Available
Many of you told us you wouldn’t subscribe until we offered PayPal as a payment option. You apparently weren’t bluffing, so we finally caved and added PayPal. Now — like the unbeliever faced with God’s invisible qualities displayed in nature — you are without excuse.
New Black Collar Arms Forged Carbon Fiber Components
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U.S.A. -(AmmoLand.com)- Originally developed as a joint effort between Lamborghini and Callaway Golf Company, the forged carbon fiber process can produce complex shapes one-third the weight of titanium, yet stronger. Partnering with manufacturing company McVick, Black Collar Arms is excited to bring the world of forged carbon fiber components to a firearm near you.
Forged Carbon Fiber One-Piece Scope Mount
Available first are Forged Carbon Fiber One-Piece Scope Mounts in 30mm and 34mm ring sizes. Despite weighing in at a scant 5.2 ounces, these forged carbon fiber scope mounts are as stiff and rigid as if they were machined from steel (three times stiffer than aluminum!) with just 1/6th the thermal expansion of aluminum.
These are the most rigid scope mounts on the market and maintain flawless zero in any condition. As if the gorgeous carbon fiber aesthetic wasn’t enough!
Forged Carbon Fiber One-Piece Scope Mounts are the first in an upcoming line of forged carbon fiber components currently being designed by Black Collar to be manufactured by McVick exclusively for Black Collar. Expect further optic mounting solutions plus other accessories and components, including AR-15 parts.
Quality is extremely high, but current production capacity is low. Mount availability will be rather limited with small batches arriving at Black Collar weekly while we gradually invest in increasing capacity.
Despite the limited and exclusive nature of the Forged Carbon Fiber One-Piece Scope Mounts and their physical advantages over aluminum mounts, not to mention their drop-dead gorgeous looks, MSRP is in-line with other premium scope mounts.
More questions, feedback, concerns, or naughty pics to share? Email our boy Jeeves at manservant@blackcollararms.com or find us on Instagram, Facebook, and www.BlackCollarArms.com
How And Why The M16 Failed In Vietnam (And Is It Reliable Today?)
https://ift.tt/3hdDTSx
From VFW halls to online forums, you normally don’t have to go far to find someone proclaiming the evils of the AR-15/M16 and how unreliable it is.
While in recent years these graybeards have been largely drowned out in the flooded market of high-quality AR-15s, there are legitimate reasons behind their criticisms and complaints.
The fact of the matter is, the M16 failed Vietnam warfighters, and Americans died because of it.
How many lost their lives due to the rifle’s early failings? Sadly, we’ll never know—but we do know that the number was not insignificant.
How did this happen? Why did it happen? Who is to blame? And can you trust the AR-15/M16 platform today?
These are all valid questions. Let’s get into it.
Table of Contents
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Facts From Fiction
Allow me to preface this article with some groundwork: I am not a historian, nor was I alive during the Vietnam war, and, as far as I know, none of my family served in the war either.
To a lesser extent, I also relied on the information provided by Small Arms Solutions.
After hundreds of hours of personal research, I feel confidant providing these details to you. If you’re interested in exploring the nitty-gritty of it all yourself, I encourage you to read the source materials listed above.
The Rifle
While “M16” is a popular designation for these rifles, the truth is another layer deep. Technically speaking, there were several variations of the M16 in Vietnam.
There were even a few versions that were never given military designations at all. These were sold to the military in small-ish batches under commercial Colt names.
I won’t try to name them here because…well, I’ll probably miss one and get yelled at in the comments.
However, what is important to know is that these rifles worked flawlessly. They were the weapons used by ARVN, the Green Berets, and other “advisers” and special operations units.
The rifles that were mass produced and adopted by the military were, in order of adoption:
M16
XM16E1
M16A1
There are several differences between each of these rifles, but most of them are largely unimportant for the story we’re looking at today.
Simply put, the vast majority of problems were found with the XM16E1.
America’s newest rifle was delivered to the military in 1964, though it wouldn’t face a true trial by fire until the Battle of Ia Drang in 1965.
While the M16 technically shared the same shortcomings as the XM16E1, it was only acquired by the Air Force and in comparatively smaller numbers.
Regulated almost entirely to guard duty, the Air Force’s M16s did not have much opportunity to see combat nor the conditions that resulted in failures.
In some rare cases, the Air Force would continue to use their original M16s until the early 2000s before finally upgrading to the M16A2 pattern.
The M16A1 solved many of the design and manufacturing problems inherent to the M16 family.
Although it was by no means perfect or immune to failure, this version of the M16 was far more reliable than its predecessors, especially in the field.
Unfortunately, the M16A1 would not enter service until 1967.
The Problems
Before we get into the why and who of the matter, let’s examine what went wrong with the XM16E1 in Vietnam.
Early on in the war, the XM16E1 was outstandingly reliable—but I mean VERY early on, as in the first few months.
The Battle of Ia Drang was the first time regular American forces met regular North Vietnamese forces in combat.
Side note, if you haven’t seen We Were Soldiers, you need to.
While the movie doesn’t touch on the matter, the book it was based on explicitly quotes Col. Moore (author) and Sgt. Savage, who both confirmed that their M16s worked flawlessly.
In the book, Col. Moore credits the XM16E1 as being a determining factor in how his unit was able to survive the battle.
Likewise, Sgt. Savage recalls that he “had about thirty magazines in my pack. And no problems with the XM16E1. An hour before dark, three men walked up on the perimeter. I killed all three of them 15 feet away.”
So, how did the XM16E1 go from that to being an unreliable piece of shi-…junk?
Failure To Extract
By far, the most common problem the XM16E1 faced was a failure to extract. After firing, the bolt would unlock and retract, but fail to remove the spent cartridge from the chamber.
Most often, the extractor on the bolt would simply slip off the rim of the spent cartridge.
If you’re lucky, this causes the bolt to short stroke, resulting in a failure to strip a new cartridge from the magazine.
Clearing this malfunction is fairly easy: Drop the magazine, rack the charging handle a bit, and 9 times out of 10 the spent case will come out.
But if you’re unlucky, this could result in a “double-feed.”
This term means that the bolt traveled far enough back to strip a new cartridge from the magazine, but because the chamber is still occupied, the two rounds double-feed.
It’s not the end of the world and can be solved with basically the same fix-it technique, but it is a trickier (and more annoying) scenario.
If you’re really unlucky, the extractor doesn’t slip off the rim of the case and instead rips the rim clean off, leaving the rest of the spent case in the chamber.
This problem can’t be cleared as quickly or easily. You need to drop the magazine, lock the bolt back, pull out your cleaning rod (if you were issued one…), and jam it down the barrel of your rifle to knock the spent case out.
All the while, the enemy is spraying you down with their AK-47s.
Ripped cartridge rims were fairly rare early in the war, but they quickly became a common occurrence.
Bolt Carrier Bounce
Have you ever wondered what exactly your buffer weights do? In part, they prevent bolt carrier bounce.
Bolt carrier bounce is exactly what it sounds like: When the BCG comes forward during the cycle, it strips a new cartridge from the magazine and feeds it into the chamber.
If the BCG is moving too fast, it will chamber the round, lock, and then bounce backward slightly.
This isn’t a big deal if you’re shooting semi-automatic because the BCG will settle forward before you can pull the trigger a second time.
But if the issue occurs during full-auto fire?
Keep in mind that these failed mechanics are occurring within milliseconds of each other. In battle, the difference of a few milliseconds can cost a life.
The U.S. military doctrine of today rarely has the average rifleman employing full-auto in their M16s or M4s. But the doctrine of Vietnam was far more liberal in the use of full-auto—mostly due to ambushes in very dense jungle.
In full-auto, the act of the BCG locking forward is what trips the hammer.
If the BCG trips the hammer but then bounces back slightly while the hammer is coming forward, it prevents the hammer from striking with full force. And often too little force to set off the primer and fire.
It’s the dreaded “click” instead of a “bang”.
The buffer weights are effectively a dead blow hammer inside the rifle and act to keep the bolt from bouncing after it locks in place.
Clearing it is a simple matter of racking the charging handle.
But if you’re spraying full-auto fire to suppress the enemy during an ambush, taking the time to rack a charging handle because your rifle went “click” will leave you with a lifelong bad opinion of the rifle.
If you even survive the ambush.
Slam Fire
If you’ve ever chambered a round in your AR-15 and then removed it without firing, you’ve likely seen a very small dimple on your primer.
That dimple is caused by the free-floating firing pin in the BCG.
How is that safe? Simple, the primer needs a lot more force to set off than what the inerta from the firing pin can provide…. at least today it does.
The M16 and XM16E1 had much heavier firing pins. Great for durability, but it also made it easier to slam fire a rifle.
Load a magazine, charge the handle or drop the bolt, and you get a “bang” instead of a “clang”.
On that note, always be sure to point your weapon in a safe direction.
To be fair, this problem can’t be attributed to any design flaws in the M16/XM16E1. It was a manufacturing issue concerning the sensitivity of the primers.
But it was still a problem.
Parts Breakage
Beyond the malfunctions, the XM16E1 suffered several part breakage problems.
Unfortunately, this isn’t exactly surprising. It’s fairly common for a newly adopted firearm in military service to face parts breakage early on.
The amount of testing a national armory or manufacturer completes can never replicate tens of thousands of grunts firing millions of rounds.
Remember, people: You are the last step in testing and quality control.
That said, a lot of parts in the XM16E1 had a tendency to break. And almost all of them were critical parts.
Bolts would crack, the disconnector on hammer springs would snap off, chambers and bores would corrode, and stocks and grips would crack and break off.
In other words, if the part was necessary for the XM16E1 to function, it would likely break during normal use.
Failure To Feed
This was a far less common problem, but it did occur—and yes, it’s exactly what it sounds like.
The BCG comes forward and, for whatever reason, fails to properly feed a round into the chamber.
However, this is another scenario that can’t be solely attributed to the XM16E1. The aluminum magazines of the time were designed for one-time use—load it, fire it, discard it.
Except the soldiers didn’t—or rather, couldn’t—discard the magazines due to supply issues. Repeatedly using the same magazine resulted in bent feed lips and failures to feed.
What Caused These Problems?!
There are some lesser issues, such as magazine and parts breakage due to quality control failures, but the vast majority of the XM16E1’s problems can be traced to two reasons:
The U.S. Army willfully used the wrong powder in their ammunition.
The chamber and bore of the barrels were not chrome plated.
Nearly every problem with the XM16E1 in Vietnam was directly caused by one or both of these issues.
Keep Your Powder Dry… And Use The Right One!
A step back is needed to understand the scope of this issue.
The AR-15 was developed in lockstep with the .223 Remington/5.56x45m cartridge. The history of that round is interesting in and of itself, but we’ll save that for another time.
ArmaLite developed the rifle and helped with the cartridge, but most of the cartridge work was completed by Remington.
For the record, this was done totally outside the military’s purview.
In this new cartridge, they used a specific power, the IMR 4475—an extruded or “stick” powder made by Du Pont and sold to Remington.
However, the U.S. military had a “sole-source” contract (zero chance for corruption there…) for gunpowder with Olin Mathieson, who exclusively manufactured the ball-shaped WC 846 powder for the military.
For simplicity sake, let’s just call them the stick powder and the ball powder.
And just so that it’s easy to remember: stick powder = good, ball powder = bad.
Sticks And Stones And Bullets May Break Your Bones
Gunpowder is gunpowder, right? No, not at all. Different powder burns differently.
Some burns faster, some slower, some are resistant to temperature, and some aren’t. Basically, there’s a lot of science that goes into gunpowder.
Stoner and ArmaLite designed the M16 to be used with stick powder. The rifle was even tuned (size and placement of the gas port, BCG weight, strength of the parts, tension of the buffer spring, etc.) for stick powder.
Ammunition made with the correct stick powder (manufactured by Remington) was utilized by various forces in the early days of Vietnam, including the ARVN, Green Berets, and the 7th Cavalry in the Battle of Ia Drang.
Stick powder worked. But… why did ball powder not work?
Changing Your Powder May Cause Side Effects
There is a lot of science we could talk about, but I’ll keep this simple. The ball powder had a different pressure curve and burn rate, causing deviating pressures in the rifle than what Armalite/Stoner/Colt intended.
This caused a muzzle velocity increase of about 100-150 feet per second and a cycle rate increase of over 200 rounds per minute. That might not sound like much, but it’s the point source of the M16’s greatest problems.
Change one thing, and you change it all.
Increased pressure in the chamber and bore means more pressure eating at the gas port, causing wear over time and even more pressure in the system.
Any increase in pressure in the system, even before the gas port starts to go, raises the energy of the whole system, starting with moving the BCG back faster and with more violence.
Move the BCG faster and harder, and you cause increased wear on critical parts, such as the bolt and disconnector.
Equal and opposite reactions mean that a faster rearward-moving BCG also equals a faster forward-moving BCG, causing more pronounced bolt bounce and granting the free-floating firing pine more inertia.
Raising the muzzle velocity also means that the dwell time is shorter. Dwell time is the amount of time between when the cartridge starts to burn and when the action of the rifle starts to cycle.
Shorter dwell time means that the pressure in the chamber is higher than it was designed for. Higher pressure means the case is harder to extract because it is still being held against the walls of the chamber of the gas pressure.
Combine that with a BCG that is moving faster and more violently, and you have extractors slipping off rims and torn case heads.
Chrome Plating: Not Just Used To Look Awesome
On its own, the change from stick to ball powder would have been a massive and major problem. But it was exacerbated but another issue, corrosion.
In case you didn’t know, Vietnam is mostly jungle and coastline. It’s very pretty when it’s not being burned by Napalm, but it’s also incredibly wet.
Vietnam experiences an average rainfall of 76″ per year, 90% of which drops during a “rainy” season that lasts about 155 days. The average humidity is 78%.
For context, the average humidity of Florida is 74%.
Fun fact: Steel hates water. And barrels are made from steel. I hope you can see where this is going.
Corrosion in the chamber of the XM16E1 caused pitting, and those pits became a critical downfall of the rifle.
A brass cartridge expands in the chamber to create a gas seal; once the pressure drops, the brass contracts and can be extracted from the chamber.
But if the chamber is filled with tiny pits, the brass swells to fill the void and becomes stuck, resulting in slipped extractors and ripped case heads.
In those rifles, it’s a lot harder to get the case out and normally requires the use of a cleaning rod.
Chrome plating is highly corrosion-resistant and three times harder than steel. Applying chromium to an M16 improves the rifle’s longevity from wear and helps protect the gas port from gas erosion.
The U.S. military discovered these advantages when Americans were fighting Japanese soldiers in the jungles of WWII.
For some reason, they forgot by the time Congress passed the Gulf of Tonkin Resolution.
Dear Mom, Please Send Me A .22 Caliber Cleaning Kit
If you’ve ever shot a rifle, then you know they get dirty. This is a fundamental fact of firearms, period.
Yet, the U.S. Army blundered again by refusing to issue cleaning kits with the XM16E1. They claimed that the rifle was “self-cleaning” and would not require a cleaning kit.
The official U.S. Army training manual of the time stated: “an occasional cleaning will keep the weapon functioning indefinitely.” Possibly one of the stupidest sentences ever written.
American fighting men in Vietnam quickly discovered that their rifles did, in fact, need cleaning. And since the U.S. Army wasn’t going to provide, they had to turn to the people who could.
Their families back home.
There are hundreds of documented letters from soldiers and Marines in Vietnam writing to their parents, girlfriends, wives, senators, and congressmen back home and begging for basic supplies.
Some of the most common requests? Weapon lubricant, cleaning patches, brushes, picks, and the item most needed of all, bore rods to knock out stuck cases.
One Marine writing his parents explained:
“Out of 40 rounds I’ve fired, my rifle jammed about 10 times. I pack as many grenades as I can plus bayonet and K bar (jungle knife) so I’ll have something to fight with. If you can, please send me a bore rod and a 1 1/4 inch or so paint brush. I need it for my rifles are getting a lot of guys killed because they jam so easily.“
The congressional committee that went to Vietnam to investigate the M16 failures tragically discovered that a Marine was killed in combat because he was the only member of his squad with a cleaning rod.
He died running up and down the line while using his cleaning rod to unjam his fellow Marines’ rifles.
Semper Fi.
How Were These Problems Allowed?!
The deeper we dive into this mess, the angrier you should be.
But the short answer is incompetence, corruption, criminal negligence, and a gross disregard for American lives. And all of it lands squarely at the feet of the U.S. Army Ordnance Corps.
As designed and tested by ArmaLite, Colt, Stoner, and Remington, the M16 is a truly amazing firearm. Reliable, accurate, and deadly.
But the rifle and cartridge they designed were not the same ones fielded by the U.S. Army.
Chrome Is Expensive
Anyone who served in the South Pacific during WWII knew that steel barrels corrode. It was a serious and notorious problem with the M1.
Stoner, ArmaLite, and Colt knew it, too. They all recommended that the chambers and bores of the M16 be chrome plated.
But the U.S. Army refused, citing that it was “unnecessary” and “cost-prohibitive.”
Change The Powder
Up to this point, you might conclude that the problems afflicting the M16 family were due to incompetence or extreme negligence.
But this is where our story takes a turn from stupidity and apathy to clear malicious intent.
They also concluded that the Army should instead use the same ball powder American forces had been using since the end of World War 1.
By that point, special forces and ARVN had been using the stick powder for years. But the U.S. Army had spoken.
Why was the stick powder “not viable”?
There is some circular logic in play. Based on the tests at Frankford Arsenal, the Army drew up a technical data package that required the M16 to have a muzzle velocity of 3,250 feet per second and a chamber pressure not exceeding 52,000 PSI.
Based on those specs, they determined that stick powder could not meet the specified requirements. And that part is true.
Your next question should be: Why did they come up with those numbers if they are not remotely what the M16, as designed by Stoner and Colt, could meet, using the ammo they designed?
The official response from the U.S. Army Ordnance Corps during the investigation was:
“In the course of the 5.56mm ammunition program, the Army could have elected to reduce the specified velocity, thus avoiding the necessity of developing new propellants … This would have reduced somewhat the range and effectiveness of the M-16 rifle. Instead, the Army chose to maintain the original [sic] ballistic performance, and utilize propellants which could meet these requirements consistently in mass production.”
In other words, they pulled those numbers out of thin air because that’s what the ball powder produced.
They didn’t care about what was best for the rifle; they choose the powder, tested it, and used the numbers from the ball powder tests to determine what the technical data package should require.
Stick powder was never even in consideration.
After the Army decided what powder they should use, they asked Stoner about his opinion on the data package.
He advised against it and was informed that the decision was already made.
Ignore The Problems
Stoner warned the Army about what would happen with the new data package.
Colt warned the Army that their in-house tests proved the rifles were not as reliable with ball powder.
In November 1965, the same month that the XM16E1 using stick powder would face combat in the Battle of Ia Drang, Colt tested several rifles and concluded that while none of the rifles were likely to malfunction using stick powder, about half were likely to fail using ball powder.
And this testing was completed using clean, maintained, and functional rifles back home in the states. Not the type of weapons being fired by our soldiers.
The report from Colt was sent to the Army and ignored.
In December of the same year, Frankford Arsenal conducted their own test. They found that the M16 with stick powder had 3.2 malfunctions and .75 stoppages per 1,000 rounds.
The same rifles, loaded with the army’s ball powder, faced 18.5 malfunctions and 5.2 stoppages per 1,000 rounds—a failure rate almost six times as high.
Colt Complicit?
In 1965, a full year after tests proved that ball powder could break the M16 rifle, General William Westmoreland, the commanding officer of U.S. Army Vietnam, sent an urgent request for the adoption of the M16 by U.S. forces in Vietnam.
He had seen firsthand how crucial the rifle would be in the dense jungles of Vietnam and how woefully outdated the M14 was.
His request for 100,000 M16s forced Colt into a tight spot.
Per the Army’s acceptance requirements, the M16s produced by Colt could not exceed 850 rounds per minute, a feat that was nearly impossible with ball powder.
Unable to meet these requirements, Colt declared that they were no longer accountable for the M16 passing the Army’s acceptance test and could not guarantee performance results with the ball powder.
The army, in reply, gave Colt permission to test the M16s with whatever ammunition they wished, so long as it passed the requirements.
Colt, having several millions of stick powder ammo in stock, used it to test the rifles and “pass” the requirements. The Army was okay with this, even though the rifles didn’t meet the technical data package specifications when paired with the stick powder.
Colt delivered more than 330,000 rifles under this agreement.
Several years later, the Ichord Committee concluded:
“the rifle project manager, the administrative contracting officer, the members of the Technical Coordinating Committee, and others as high in authority as the Assistant Secretary of Defense for Installations and Logistics knowingly accepted M-16 rifles that would not pass the approved acceptance test.“
Colt knew the M16 couldn’t meet the requirements, as did the U.S. Army. But instead of fixing anything, the military allowed Colt to just fake it.
At this point, nearly all of the ammunition used by American soldiers in Vietnam was the ball powder that everyone knew didn’t work.
The Ichord Committee’s report further concluded:
“The failure on the part of officials with authority in the Army to cause action to be taken to correct the deficiencies of the 5.56mm ammunition borders on criminal negligence.“
Why Did The U.S. Army Engage In Criminal Negligence?
There are few facts to pursue in this case. No one was charged with negligent homicide or treason; no one went to trial.
But there are some educated guesses we can make as to the motive behind all of this.
The role of the U.S. Army Ordnance Corps was to provide the American military with arms. They designed them, tested them, and produced them. And by the 1960s, had done so for almost 150 years.
But what happens when someone from outside of the military does all of the development?
Stoner designed the M16, but Colt owned the rights to produce it. If the military adopted Colt’s rifle, Colt would build it. And they did.
These circumstances left the U.S. Army Ordnance Corps…obsolete. And all of those high-ranking officers were out of a job.
From the start, the U.S. Army Ordnance Corps hated the M16. They ignored it, degraded it, and slandered it. But due to forces outside of their control, they were forced to accept it.
So, the U.S. Army Ordnance Corps “accepted” the M16 on their terms.
Terms that were impossible for the M16 to meet, which they knew from the start. In short, they sabotaged the M16 project.
The M16A1
After years of the XM16E1 getting men killed, the M16A1 was finally adopted in February of 1967 with ten major engineering changes.
Ironically, these changes were not instituted to fix the M16. They just overhauled the design so it would run better with the Army’s ball powder.
By this time, it was too late to go back to using stick powder. DuPont stopped manufacturing the IMR stick powder back in 1964 because the Army refused to adopt it.
The changes between the XM16E1 and the M16A1 include the buffer, bolt hardness, gas tube, finish on the bolt carrier key, bolt catch, flash hider, firing pin retainer, and disconnector.
The manufacturer also added a raised fence around the magazine release to prevent the unintentional dropping of magazines.
And finally, in May of 1967, a chrome-plated chamber was added to the revision list.
However, none of these changes addressed the greatest issue—the ball powder was simply bad. The new improvements increased the M16A1’s reliability and durability but did nothing to solve its failure to extract problem.
It wouldn’t be until 1970 that the ball powder was finally reformulated to be closer to what the stick powder was all along.
The M16/M4 And AR-15 Today
It’s been 50 years since the problems with the M16 were fixed, but the rifle still suffers from a legacy that it never deserved.
The M16 did not fail in Vietnam. On the contrary, even with its problems, it was in every possible way a vastly superior rifle to the M14.
Fault doesn’t rest with the M16, Stoner, or even with Colt. Instead, it lands with the officers in the U.S. Army who not only allowed the problems to occur, but ignored the designers, the men testing the rifle, and everyone in between.
Today, the M16 and M4 are outstandingly reliable rifles, but only because they are allowed to be.
Civilian AR-15s, as long as they are reasonably well made, are hands down the best rifles you can own for self-defense, competition, or bugging out.
It is honestly amazing just how good of a rifle the platform is when there aren’t people actively trying to sabotage it.
Parting Shots
No one was ever truly held accountable for the crimes committed against the soldiers and Marines who served and died in Vietnam due to gross disregard by nameless officers back home.
As you might expect, during the congressional investigation, people kept their mouths shut or “couldn’t recall” reports or incidents. Documents were never turned in or found, likely burned as soon as the subpoenas showed up, and no grand jury was ever convened.
No proof of corruption was found. While the sub-committee asked that Colt’s profits and Olin Mathieson’s “sole-source” contracts be investigated and audited, congress never followed through.
We’ll never know exactly who is to blame. We’ll never know exactly why they chose to let people die rather than adopt a new powder. And the families of the dead will never find the justice they deserve.
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