Anderson

Anderson Manufacturing B2-K611-AF00
Optics Ready Upper Assembly
5.56 NATO - Accepts .223 Remington and 5.56 NATO Cartridges
16" Barrel
Barrel Made from 4150 Chrome Moly Vanadium
M4 Medium Contour
1:8" Twist Rate
Direct Gas Impingement System
Carbine Length Gas System
Forged 7075-T6 Aluminum Flat Top Upper Receiver
Type III Hard Coat Anodized Finish
Non-RF85 Treated
Railed Gas Block
Flash Hider Muzzle Device
A2 Pistol Grip
A2 Plastic Hand Guards
Matte Black

Does NOT Include:
Bolt Carrier Group
Charging Handle

Fits:
Mil-Spec AR-15 Lower Receivers