NEW ADAMS ARMS 16″ CARBINE AR-15 RIFLE.

Upper Receiver: A4 Flat-Top, Forged

Barrel Length: 16″

Barrel Contour: Government

Barrel Material: 4150 Chrome Moly Vanadium Steel

Muzzle Thread Pattern: 1/2″-28

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: A2 Flash Hider

Gas System Length: Carbine, Short Stroke Piston Operated

Gas Block Diameter: 0.750″

Handguard: 2-Piece Polymer, Carbine-Length

Sights: None, Single Rail Gas Block

Grip: Standard A2

Trigger: Mil-Spec Standard Trigger

Weight: 6.208 lbs