Angstadt Arms AA45BCGNIT Bolt Carrier Group 45 ACP QPQ Black Nitride 8620 Steel AR-15

The Angstadt Arms AA45BCGNIT is a purpose-built bolt carrier group designed for AR-15 platform builds chambered in 45 ACP. Machined from 8620 alloy steel and finished with a QPQ black nitride coating, this BCG delivers the durability and corrosion resistance demanded by pistol-caliber carbine applications.

This carrier is engineered for use with GLOCK-pattern 45 ACP magazines and runs with a standard AR-15 hammer, making it a straightforward drop-in upgrade or build component for AR-45 pistols and rifles. The black nitride treatment provides a hard, low-friction surface that stands up to suppressed and unsuppressed firing schedules alike.

The carrier features removable weight for compatibility with the Law Tactical folding stock adapter, adding versatility for compact and folder-equipped AR-45 builds. Whether you are assembling a new pistol-caliber carbine or replacing a worn component, the Angstadt Arms AA45BCGNIT offers the strength, fit, and finish expected from a quality BCG.