Black Nitride Bolt Carrier Group with MPI Bolt

Features:

• MPI Bolt (Magnetic Particle Inspected)

• Carpenter 158 steel bolt (black nitride)

• Shot peened firing pin

• Grade 8 hardened fasteners

• 8620 heat treated carrier, polished w/black nitride coating

• Key staked per Mil-Spec

*No Returns taken on Bolt Carrier Groups. If defective, we will arrange shipment and return to Manufacturer Representative for Inspection/repair or replacement. Void if fired with reloads or if rifle is not assembled by a Manufacturer or Gunsmith.*