Adams Arms NY Compliant AR15 16" Mid Length MOE Piston Upper AR-15

Adams Arms NY Compliant AR15 16" Mid Length MOE Piston Upper AR-15

Part Number:FGAA-01099
On sale: $728.00
Retail Price:$832.95
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Adams Arms 16" Mid Length MOE Piston Upper NY Compliant AR15 AR-15


The 5.56 Midlength MOE 16" Upper is a standard mil-spec upper that incorporates the patented Adams Arms piston technology and the Magpul MOE forearm. The midlength piston system will give you the benefits of a longer forearm by giving the user a longer, more ergonomic grip, a longer sight radius between the front and the rear sight for quicker sight acquisition and less felt recoil. The piston system parts and the barrel have been treated with our salt nitride Meloniting process making them harder and more corrosive resistant than hard chrome.

Specifications:

Weight: 4.3 lbs

Upper Receiver: A4 Flat-Top, Forged

Barrel Length: 16"

Barrel Contour: Government

Barrel Material: 4150 Chrome Moly Vanadium Steel

Muzzle Thread Pattern: NONE


Chrome Lined: No

Barrel Finish: QPQ Melonite / Black Nitride

Twist Rate: 1 in 7"

Chamber: 5.56x45mm NATO

M4 Feed Ramps: Yes

Bolt Carrier: 1-Piece w/Integral Piston Strike Face

Muzzle Device: NONE

Gas System Length: Mid, Short Stroke Piston Operated

Gas Block Diameter: 0.750"

Handguard: Magpul MOE

Sights: None, Single Rail Gas Block

Current Barrels Disadvantages:

Standard chrome lined barrels are rifled with a slightly larger diameter than what is needed. This is done so the hard chrome can be added on top of the surface area which will add to the tolerances. It leaves high and low spots along with microscopic divots and deficits. These imperfections add resistance to the round as it travels down the barrel, slowing down the velocity. Accuracy and range of efficiency drops when the velocities on the round drop. This is evident even more so with the shorter barrels. The trade off is hard chrome resists corrosion better than the bare material the barrel is cut from and it does not have a high cost associated with it. While eventually over time it will wear off, hard chrome will outlast bare metal. You sacrifice accuracy for longevity.

Stainless steel barrels are well known for higher velocities and better accuracy because the bore has been cut true into the steel. This cut does not leave any added imperfections so the round has less resistance as it travels down the barrel. This quality does come at a high price. Most stainless steel barrels cost almost twice what a chrome lined barrel cost, which prices them out of the market for most shooters. Also, while they have corrosive resistant properties by nature, they are not completely corrosive resistant and can corrode over time. They are the choice for most high end manufacturers and shooters but they are not a viable option for every shooter.

Adams Arms Advantage:

Our barrels are finished with our proprietary QPQ Melonite process inside and out. Unlike hard chrome and magnesium phosphate, Melonite is a molecular bonding process with the metal. It allows the chemicals to seep down below the surface area of the metal, instead of just adding a top layer. This means that the barrel can be cut to a true rifle bore while maintaining complete corrosion resistance and virtually no wear. It also means that the protection offered is not just a thin layer on top of the material but actually penetrates layers deep ensuring that it does not wear off. Now you have the velocities of a stainless steel true rifle bore with complete protection! You can out last a chrome lined barrel and shoot with the accuracy and efficiency of a stainless steel barrel, all without breaking the bank. Check out velocity testing below.

The SBR velocity data especially stands out. The 7.5" PDW AR is a now viable option for personal and professional defense as well as military units that need a short CQB rifle with an effective range well past 100 meters. We have been getting even higher velocities out of our 11.5" and 14.5" barrels, with the 14.5" averaging close to 3000 fps using military ammo. Our 16" barrels are getting velocities very close to a standard 20" chrome lined AR15 barrel!

 

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