AR Bolt Carrier Groups

Power your AR-15 with reliable bolt carrier groups from Crossfire Gunsmith & Firearms in Lexington, SC. The BCG is your rifle’s heart – controlling extraction, ejection, and chambering while enduring extreme pressures and temperatures with every shot fired.

Our AR bolt carrier group selection includes mil-spec phosphate BCGs for standard use, nickel boron coated groups for easy cleaning, and enhanced carriers with improved materials. Whether you’re building a basic carbine or high-volume training rifle, quality BCGs ensure reliable cycling.

Quality bolt carrier groups feature proper staking, precise machining, and durable finishes that withstand thousands of rounds. From standard weight carriers to lightweight options, proper BCG selection ensures reliable function and longevity.

Completing your upper? Browse our AR barrels and check out charging handles for complete upper assemblies.