AR Bolt Carrier Groups

Come by our gun shop in El Dorado Springs, Missouri for quality bolt carrier groups, or order online with nationwide shipping. At Bear Arms in El Dorado Springs, Missouri, our AR Bolt Carrier Groups (BCGs) collection features factory-spec and enhanced BCGs built for durability, smooth cycling, and long service life. A properly spec’d bolt carrier group is the heart of any reliable AR Rifles or AR Pistols — it affects extraction, ejection, headspace, and overall function. We stock full-auto-spec and semi-auto replacements, nickel boron and phosphate finishes, lightweight and heavy carriers, and matched gas key torque/peening where applicable. Pair your BCG with the correct AR Barrels and quality Rifle Ammunition for consistent accuracy and reliable operation. If you’re building or upgrading, consider complementary parts like upgraded firing pins, gas rings, and extraction springs from our small parts and upper parts ranges. Our team can advise on compatibility, headspace concerns, and maintenance best practices to extend service life. Visit us in El Dorado Springs, Missouri or shop AR bolt carrier groups online today for expert advice and dependable service.