Bolt Carrier Group (Nickel Boron) 223/556, 300 Blackout, 350Legend

Product Details

Platform: AR-15
Caliber: 5.56/.223, 300 Blackout, 350 Legend
Finish: Nickel Boron Coating
Bolt Steel: Milspec Carpenter No. 158
Bolt: Shot Peened
Mag Particle Inspected: Yes