Adams Arms AR-15 Carbine Length Evo Ultra Lite Complete Upper Assembly .223 Rem/5.56mm NATO 16" Barrel 1:7" Twist Flattop Samson Free Float Modular Rail Black UA-16-C-EUL-556

Adams Arms
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The Adams Arms Carbine Length Gas Piston complete upper assembly has everything you need and want in a piston upper assembly. The short stroke gas piston operating system is designed to run cooler and cleaner than a standard direct impingement system. Piston systems increase overall reliability while also decreasing the amount of maintenance required to keep he firearm operational.

Specifications and Features:
Adams Arms Complete Upper Receiver UA-16-C-EUL-556
5.56mm NATO (accepts .223 Remington)
16" Light Weight .625" Profile Barrel
1:7" Twist
4150 Chrome Moly Vanadium Steel
QPQ Melonite and Black Nitride Barrel Finish
Not Chrome Lined
Muzzle Threaded 1/2"x28
Ported Muzzle Device
Carbine Length Short Stroke Piston System
1 Piece integral piston strike face bolt carrier
M4 Feed Ramps
Samson Free Float Modular Rail
Weighs 4.454 lbs