PSA 5.56 NITRIDE MPI FULL-AUTO BOLT CARRIER GROUP

DETAILSPSA 5.56 NITRIDE MPI FULL-AUTO BOLT CARRIER GROUP

Bolt Finish: Nitride
Bolt Steel: 9310
Profile: Full Auto Profile
Gas Key: Grade 8 Hardened Fasteners, Staked per MilSpec

Bolt is Magnetic Particle Inspected (MPI)

**Due to part constraints, some orders may receive a free upgrade to a Mil-Spec Carpenter 158 Bolt**

FEATURES
8620 Full-auto profile bolt carrier group with 9310 steel bolt. Gas Key Hardened to USGI Specifications, Fastened with Grade 8 screws, and Staked Per Mil-Spec.