Angstadt Arms AR-15 .223 / 5.56 Bolt Carrier Group

The Angstadt Arms AR-15 .223/5.56 Bolt Carrier Group is a drop-in rifle BCG featuring a precision-machined 8620 steel alloy carrier and a Carpenter 158 steel bolt with a corrosion-resistant QPQ black nitride finish for superior durability and long-lasting performance. Compatible with most AR-15 triggers and Mil-Spec receivers, this full-auto-compatible BCG is magnetic particle-inspected and features a properly-staked gas key with grade 8 fasteners. Works with most AR-15 mags. Machined to Mil-Spec dimensions.