Rock River Arms Complete Bolt Carrier Group (CHROME)
Smooth, Reliable Cycling. Chromium Plated AR-15 Complete Bolt Carrier Group
(Assembly). Fully assembled for your semi-automatic .223 (5.56) AR-15.
treated steel bolt is hard-chrome plated for natural lubricity, positive
cycling, and less wear. Both finishes make cleaning extremely easy. Machined to
military specs to ensure correct fit and functioning. These parts are function
tested at the factory prior to packaging and may exhibit