Upgrade your AR-15 with the PSA 5.56 Nitride MPI Full-Auto AR-15 Bolt Carrier Group, engineered to deliver exceptional performance. The bolt undergoes meticulous Magnetic Particle Inspection (MPI), ensuring reliable quality and peace of mind. With a 8620 full-auto profile bolt carrier group and a robust 9310 steel bolt, this component guarantees long-lasting durability and flawless operation. The gas key is hardened to USGI specifications, securely fastened with Grade 8 screws, and staked per Mil-Spec requirements, ensuring optimal reliability and performance. Trust in the PSA 5.56 Nitride MPI Full-Auto Bolt Carrier Group to enhance the functionality and reliability of your AR-15.
