8620 Steel Carrier 4130 Steel Gas Key with Grade 8 fasteners (Staked) 4140 Steel Cam Pin M16 Auto Profile 6.5 Grendel Type II (.136) / 6mm ARC / .22 ARC Bolt – 9310 Steel (Shot Peened) Nitride, NiB (EXO®), DLC or P51 HPB Mil-spec Gas Rings MPI Hard Chrome Firing Pin Quantity Discounts (Applied in Cart) 2-4 BCGs – $5 off each 5-9 BCGs – $10 off each 10 BCGs – $15 off each
