Adams Arms AR-15 Mid-Length Gas Piston Complete Upper 5.45x39 16" Barrel Flattop Upper Receiver M4 Handguards Melonite Finish Black UA-16-M-B-545

Adams Arms
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The Adams Arms Mid-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. This upper receiver can be connected to any standard AR-15 lower receiver.

Specifications and Features:
Adams Arms Complete Upper Receiver UA-16-M-B-545
16" Government Profile
4150 Chrome Moly Vanadium Steel
QPQ Melonite and Black Nitride Barrel Finish
Not Chrome Lined
A2 Flash Hider
Mid-Length Short Stroke Piston System
1 Piece integral piston strike face bolt carrier
M4 Feed Ramps
2-Piece Polymer Mid-Length Handguard
Railed Gas Block .750" diameter
Weighs 4 lbs