Adams Arms 16" Carbine-Length AR-15 Complete Upper Assembly

Adams Arms
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The Adams Arms Carbine-Length Base AR-15 Complete Upper Assembly has everything you need in a piston upper assembly. This upper receiver includes M4 handguards and can be connected to any standard AR-15 lower receiver.

AR-15 piston systems increase overall reliability while also decreasing the amount of maintenance required to keep the firearm operational. The short stroke gas piston operating system is designed to run cooler and cleaner than a standard direct impingement system. The piston system parts and the barrel have been treated with a salt nitride meloniting process making them harder and more corrosive resistant than hard chrome.

Features and Specifications:
Manufacturer Number:UA-16-C-B-556
Adams Arms Carbine-Length AR-15 Complete Upper Assembly
Material: 4150 Chrome Moly Vanadium Steel With QPQ Melonite/Nitride Finish
Caliber: 5.56mm NATO/.223 Remington
Barrel: 16", Government Profile
Rifling: 1:7" Twist
Muzzle: 1/2" x 28 Threaded
Muzzle Device: A2 Flash Hider
Rail: Picatinny
Handguard: 2-Piece Polymer Construction, Mid-Length
Gas System: Carbine-Length Short Stroke Piston System
Gas Block: Single Rail, .750"Dia
Upper Receiver: A4 Flat-Top, Forged
Bolt Carrier: 1-Piece Integral Piston Strike Face
Feed Ramps: M4
Weight: 4.192 lbs
Finish: Black