m855a1 For Sale | At Best Prices


Category: Product ID: 10224


m855a1 For Sale:

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The M855A1*(M855A1 for sale), a 5.56 mm Ball ammunition, is an enhanced performance round for today’s combat and training environments.

It works with the M4 Carbine, the M249 machine gun, and the H&K and M16A2 rifles.

 It is suitable for use in most weapons with a 1-in-7 barrel twist.

The M855A1 has a copper-jacketed steel core, differing from the previous M855 round which has a lead core.

The so-called “green ammo” not only has increased penetration of armor and hard targets, but allows the Army to be more environmentally friendly on its ranges and training environments.

The M855A1 is optimized for the shorter-barrel M4 where the standard M855 was optimized for the M16.

The powder burns faster and creates more pressure, and has the effect of reducing flash.

The round yaws like the M855, but its yaw is more consistent and predictable, meaning its terminal effects are not yaw dependant.

The Army plans to replace its entire inventory of M855 rounds with the M855A1 round.


In 1982, the Army adopted the 5.56mm M855 round to replace the M193.

In an effort to achieve better performance at longer ranges with the M249 Squad Automatic Weapon (SAW).

A steel penetrator in the front end of the M855 provides increased hard-target performance.

Development of the M16A2 rifle, which matched the twist of the M249 SAW, also allowed use of the heavier M855 round.

The M193 is still produced today, largely for foreign military sales.

From 2003 to 2006, the Army conducted a study of available bullets, commercial and military, and found none that provided improved perforA,A!mance over the M855 against the target sets required of a general-purpose round.

Ensuring Consistency and Environmental Responsibility

In post-combat surveys and field reports from Iraq and Afghanistan.

Most Soldiers have indicated that the round works fine, delivering the desired effects against threat targets.

But some Soldiers have reported that the round did not perform consistently, causing concern in the ammunition community.

In parallel, mounting environmental concerns drove the Army to consider replacing environmentally unfriendly materials such as lead.

The Army’s ammunition community, led by PEO Ammo, saw an opportunity to address the two concerns associated with the M855 round-lead and consistency.

The Army’s solution is the new M855A1 Enhanced Performance Round (EPR).

This round offers better performance than the M855 against all targets likely to be engaged with small arms

. This is quite a feat, considering the long-standing solid performance of the M855.

While it’s true that a number of bullets (such as armor-piercing bullets) can penetrate hard targets well.

They don’t provide the needed effects against soft targets.

Conversely, some bullets (such as hunting rounds, hollow-point, and other bullets) work well against soft targets but can’t penetrate harder barriers.

Nor do hollow points meet the Army’s requirement to adhere to the Law of War, defined as “[t]hat part of international law that regulates the conduct of armed hostilities.

It is often called the ‘law of armed conflict’ ” (DoD Directive 2311.01E, DoD Law of War Program).

Even today, we have found no other round-other than the new EPR-that can outperform the M855 as a capable, general-purpose round.

Why the M855A1 for sale Excels

So what makes the EPR so good’ It uses the same components as the M855-a jacket, a penetrator, and a metal slug.

But the new round contains some subtle changes (see Figure 1).

The copper cup, from which the jacket is formed, is reverse-drawn, the opposite of how the M855 jacket is drawn.

The hardened steel penetrator is almost twice as heavy as the one used in the M855 and is fully exposed instead of hiding beneath the softer copper jacket.

The slug is made of copper, making the projectile nonhazardous to the environment while delivering needed performance.

Since the EPR is similar to the M855, the Army can use the same manufacturA,A!ing equipment now used for the M855.

Providing additional savings and large-scale manufacturing capability.

Once the M855A1 replaces the leaded M855, it will reduce the amount of lead in production by approximately 2,000 metric tons yearly.

It is based on the amount now used to make the M855.

There are three main areas in which the new round excels: soft-target consistency, hard-target penetration, and the extended range at which it maintains these performance improvements.

This is not to imply that the EPR increases the maximum effective range of the M4 or M16.

Its trajectory matches the M855’s, which aids in training, lessens the need to re-zero the weapon.

It allows it to link to the current tracer round (the M856) for eventual use in the M249 SAW.

So while the maximum effective range does not increase, effectiveness at range does.

Meaning the round greatly extends the range of desired effects along its trajectory.

The Army tackled the consistency issue by focusing on the yaw of a projectile.

And how differences in yaw can influence results when striking soft targets.

The M855 round, similar to the Army’s M80 (7.62mm ball round), is a “yaw-dependent” bullet.

As any bullet travels along its trajectory.

It “wobbles” in both pitch and yaw, causing the projectile to strike its target at different attitudes with virtually every shot.

For a yaw-dependent bullet such as the M855 or M80, this results in varying performance.

Depending upon where in the yaw/pitch cycle the bullet strikes its target.

For example, at a high angle of yaw, the M855 performs very well, transferring its energy to the target in short order.

At a low angle of yaw, however, the bullet reacts more slowly, causing the inconsistent effects observed in the field.

The M855A1 is not yaw-dependent. Like any other bullet, it “wobbles” along its trajectory.

However, the EPR provides the same effects when striking its target, regardless of the angle of yaw.

This means the EPR provides the same desired effects every time, whether in close combat situations or longer engagements.

In fact, the U.S. Army Research Laboratory (ARL) verified through live-fire tests against soft targets that, on average.

The M855A1 surpassed the M80 7.62mm round.

The 7.62mm, although a larger caliber, suffers from the same consistency issue as the M855, but to a higher degree.

Hard-target performance is a second area where the EPR really shines (see Figure 2).

The exposed, heavier, and sharper penetrator, along with a higher velocity.

It allows Soldiers to penetrate tougher battlefield barriers than is possible with the current M855.

Although it’s not an armor-piercing round, the EPR can penetrate 3/8 inch-thick mild steel at distances.

Approaching 400 meters (based on the range at which 50 percent of the rounds can pass through the barrier).

The M855 only penetrates this material out to approximately 160 meters.

Not only is this performance much better than the M855’s with its smaller steel penetrator, it is vastly better than the M80 7.62mm round.

Additionally, the EPR can penetrate concrete masonry units at ranges out to 80 meters with the M16 and 40 meters with the M4.

The M855 can’t penetrate this type of battlefield barrier at any range.

Also notable is the EPR’s excellent performance against softer intermediate barriers such as car doors, windshields, or Kevlar fabric.

The thinner metal found on car doors poses no problem.

When engaging targets behind windshields with the EPR, ARL has shown an increase in the probability of hitting the occupant.

This is due to both the steel penetrator and the copper slug remaining intact through the glass.

Furthermore, ARL tested the round against 24 layers of Kevlar fabric out to 1,000 meters.

But discontinued the test as the Kevlar showed no sign of being able to stop the EPR.

The EPR also penetrates some lesser-quality body armors designed to stop 7.62mm ball rounds.

Another benefit Soldiers will see from the new round is its effectiveness when engaging soft targets at longer ranges.

As a small-caliber projectile’s velocity decreases, it eventually will reach a point at which it can no longer transfer most of its energy to its target.

Below this velocity, which equates to range, the round is more likely to pass through its target with little effect.

The M855A1 can maintain consistent, desired effects at a much lower velocity, resulting in excellent effectiveness at far greater ranges along its trajectory.

In addition to the above-mentioned performance improvements, the EPR is more accurate than the M855.

Accuracy testing during production lot acceptance has shown that, on average, 95 percent of the rounds will hit within an 8 x 8-inch target at 600 meters.

It also uses a flash-reduced propellant optimized for the M4’s shorter barrel.

The good news is that all of these performance improvements come with no weight increase to the Soldier.

Soldiers Are the Focus

Soldiers will surely discuss the M855A1 EPR during their ritual debates on guns and ammo.

The new M855A1 will greatly increase Soldier performance on the battlefield, but inevitably.

Soldiers will have the final vote as they must maintain their weapon systems, train, aim, and engage their targets.

As always, good marksmanship skills are critical for success in small-arms engagements.

No matter how good the bullet, it can’t do its job if it doesn’t hit the target.

During the past 50 years, 5.56mm general-purpose ammunition has evolved to a level of performance.

That addresses all of the major warfighting needs of our services.

The M855A1 EPR is a significantly improved 5.56mm round that provides excellent soft target.

Also consistency and vastly better hard target performance.

It increases our Soldiers’ effectiveness at extended ranges with better accuracy-all without increasing their load.

The M855A1 represents the most significant performance leap in small-arms ammunition in decades.

Our Soldiers deserve the best, and with the M855A1 EPR, they get it.

LTC JEFFREY K. WOODS is the Product Manager for Small-Caliber Ammunition.

In the Office of the Project Manager Maneuver Ammunition Systems, PEO Ammo.

He holds a B.S. in business administration from the University of Texas.

And an M.S. in operations research from the Florida Institute of Technology.

Woods is also a graduate of the U.S. Army Command and General Staff College.

And Defense Systems Management College, and is a U.S. Army Acquisition Corps member.

The M855A1 has been the subject of plenty of gnashing of teeth and is both loathed and loved.

Today we are going to take an unbiased look at the M855A1 and discuss why the Army.

Marine Corps moved to the new round and explore its benefits as well as its downsides.

Breaking down the M855A1 for sale

The M885A1 utilizes a 62-grain projectile, much like the M855.

It is slightly longer than the M855 due to its construction.

The Army completely eliminated lead from the equation.

The use of a copper jacket combined with a copper plug maintained the weight of the M855A1 round and offered better penetration.

Comparison of M193, M855, M855A1, and M855A1 copper core rounds

Additionally, the round’s elimination of lead allows the projectile to be green-friendly and doesn’t pollute the Army’s training areas.

The copper cup sits at the bottom of the round; it is a reverse-drawn copper alloy jacket, which is the opposite of the M855.

The steel slug is heavier and exposed versus the copper jacket that encloses the steel slug on the M855 round.

Beyond the projectile, the M855A1 is optimized for the shorter barrel of the M4.

The M855 was optimized for the longer-barreled M16 series rifle.

The M855A1 uses a faster burning powder that creates more pressure and amps up velocity.

This higher velocity results in more effective penetration and down-range performance.

Related: This is why the M855A1 replaced the M855

Is m855a1 armor-piercing?

Armor-piercing is a loaded term that’s tough to define without defining the armor.

The Army and military, in general, have a set definition of armor-piercing.

According to the military’s definition, the M855A1 is not an armor-piercing round.

Instead, the famed blacktip M993 is the Army’s 5.56 caliber armor-piercing round.

The M855A1 will pierce through soft armor and subpar armor plates but doesn’t zip through modern armor.


The M855A1 uses a steel penetrator that does well against hard barriers and even mild steel plates.

In fact, it performs substantially better than the original M855 when it comes to barrier penetration.

With that said, it’s still not considered armor-piercing.

Related: War elephants: The original heavy armor fought into the 1950s

The M855A1 versus the M855

The M855A1 does a fantastic job of piercing through hard barriers.

When it zips through wood, glass, car steel, and similar mediums, the projectile maintains great ballistic potential.

It can pierce a ⅜ inch mild steel plate out to 160 yards.

Beyond that, the round yaws like the standard M855, and when yawing, the round increases its terminal effectiveness.

The difference in yawing translates to more consistent performance regardless of the angle.

When the standard M855 approaches via a high angle of yaw, the performance is brilliant and effective.

When the M855 strikes at a low angle of yaw, the round performs inconsistently.

However, the M855A1 performs regardless of the angle of yaw.

As such, the M855A1 isn’t yaw-dependent. It even outperforms the 7.62 M80 round in that regard:

The 7.62 might be bigger and heavier, but the M80 is yaw-dependent, much like the M855.

The M855A1 doesn’t offer more range than the M855 but is more effective at longer ranges.

Both the M855 and M855A1 rounds maintain the same trajectory, but along that trajectory.

The M855A1 performs with great efficiency along that trajectory.

All this, without any weight increase to the individual soldier.

The downsides

Not even advanced ammo design gives us a free lunch and the M855A1 does have some downsides.

First, to obtain M16 performance in an M4, the manufacturer had to use a faster burning powder that accelerates the velocity of the round.

In doing so, pressure increases.

The M855 has an average PSI of 51,500. The M855A1 increases that pressure to over 61,000 PSI.

This results in increased wear on firearms, including on their the bolt and barrel.

Notice the angle of the projectile on the right. The right represents the proper feeding angle. (Courtesy Larry Vickers)

The exposed steel penetrator and harder nature of the round were also shown to wear down the barrel extensions of M4 rifles.

The round didn’t fully clear the ramps of the M4 and would be driven into the feed ramps.

To remedy this, a new magazine design was implemented that ensured the round sat higher in the magazine and fed into the weapon without damaging the barrel extension.

The future of 5.56 Projectiles

The benefits of the M855Aq are apparent. In the short term, the round will make the Soldier and Marine more lethal and better able to kill their enemies.

The long-term issues of durability are a major concern, however as Soldiers and Marines can’t afford a broken bolt in the middle of a firefight.

For the M855A1 to function long-term, the military will need to ensure both the M27 and M4 rifles can withstand the abuse the round throws at them.

FAQ About M855A1 For Sale

  • M855A1 armor-piercing?

According to the military’s definition, the M855A1 is not an armor-piercing round.

Instead, the famed blacktip M993 is the Army’s 5.56 caliber armor-piercing round.

The M855A1 will pierce through soft armor and subpar armor plates but doesn’t zip through modern armor.

  1. Why is M855a1 not armor-piercing?

The bullet (projectile) must also have a core made entirely out of the metals listed above, or be a full jacketed bullet with a jacket weighing more than 25% of its overall weight.

This means that the SS109/M855 bullets wouldn’t be covered, as their cores are partly steel, and partly lead.

  • Difference between M855 and M855A1?

The M855A1 has a copper-jacketed steel core, differing from the previous M855 round which has a lead core.

The so-called “green ammo” not only has increased penetration of armor and hard targets.

But allows the Army to be more environmentally friendly on its ranges and training environments.

Does USMC use M855A1?

The Marines adopted the M855A1 on December 2017 .

The problems with the IAR and also the M855A1 were known for some time

. An Army test in 2016 revealed that the M855A1 would scratch and wear the forcing cone on the IAR and cause reliability issues.

FAQ On M855A1 For Sale

  • M855A1 Green Tip?
M855A1 For Sale

Also, the M855A1 (right) is manufactured from a copper jacket, steel arrow head core with a copper plug.

The M855A1 For Sale projectile fit the Army requirement for a “green” projectile that does not have any lead.

Image result

Green-tip ammunition is most common in 5.56/. 223 Rem caliber and is also mainly designed for use with the AR platform.

These rounds were originally considered controversial, as they meet one of the criteria of the federal definition of armor-piercing ammunition.

  • Why military utilize green tip?

The US military adopted the round in the early 1980s to replace the M193 5.56 ammo in use at the time.

It was renamed M855, and the tips were painted green so personnel could readily differentiate the new ammo from the old M193 rounds, which were gradually phased out.

  • Civilians buying green tip ammo?

M855A1 For Sale

Can I Legally Buy Green Tip Ammo? Currently, green-tipped ammo is legal for US civilians to own under federal law.

However, certain states, such as California, have Draconian gun laws that constantly seek to limit what state residents can own.

  • Can M855 Stop Level 3?

Level III will stop most of all 5.56mm and 7.62mm bullets, but will not defeat military-grade armor-piercing ammo.

For example, a NATO M855 5.56 x 45mm bullet with a 62-grain steel core will defeat a Level III armor system.

It will, however, defeat a 5.56 x 45 mm bullet at 55 grain.

  • Purpose Of 5.7 x28 design?

The design was patented back in 1989 by FNH. It was originally developed as part of a military Personal Defense Weapon (PDW) project undertaken by FNH for NATO.

In a nutshell, the 5.7x28mm was originally designed to replace the 9mm cartridge in NATO service.

  • Calibers comparable to 5.7 x28?

However, if any caliber can replace the 9mm, it’s the 5.7x28mm. It offers many of the same benefits the 9mm provided compared to the .45ACP. A higher-capacity magazine with lighter, mo


m855a1 for sale comparison

Shown above is a comparison of the M855,
M856 Tracer, early M855A1 and the issue M855A1.
The difference between the early and issue M855A1 projectile is the plug under the penetrator. Early projectiles used a tin/bismuth alloy.
It was found there was not enough mass to it to properly stabilize in the arctic environment so they switched over to copper.
Lead has more mass to it than either the tin/bismuth or copper alloy for the same weight.
You have to have more copper to get the same weight.
You will notice that the M855A1 projectile is just slightly longer.


Looking at the cross sections you are able to see that both projectiles are made up of three components.
The M855 (left) consists of a copper jacket, steel penetrator core and lead plug.
The M855A1 (right) is manufactured from a copper jacket,
steel arrow head core with a copper plug.
The M855A1 projectile fit the Army requirement for a “green” projectile that does not have any lead. This creates a much more expensive projectile.
How was the Army able to sell this more expensive projectile?
They increased the cost to produce all other military rounds to offset the expense of this new cartridge.


Shown is a US Government comparison chart showing the M855 on the left
and the M855A1 on the right. Notice the vital information left out, velocity and chamber pressure.
This information is where the metal meets the meat.
This is the area that is significantly different between the two that has caused all the controversy. I have seen government
spec sheets that include their claim the
M855A1 is many steps ahead of the M855.
However, I have never been naive enough believe the government gives all the proper info out. Like most things,
I never pay attention to what others tell me so I find out for myself.
I took M193,
M855, M995 and M855A1 to a ballistic laboratory and got all the information.
Regardless of what the Army claims, this is an independent test.

Armor Penetration

I procured a 1/2 piece of armor plate.
The steel was secured to a railroad tie so it was stationary and would not move.
The rifle was a 16 inch M4-type rifle and each shot was taken at 25 yards.
One round each of M193, M855, M995 AP and M855A1 were shot.