NBS AR-15 Bolt Carrier Group - 6.5 Grendel Nitride

The NBS M16 bolt carrier group is the perfect BCG for your next build. Properly built, no corners cut, 100 percent US made. With our lifetime guarantee, you can't go wrong.M16 / AR15 6.5 Grendel8620 M16 style carrierH&M Black Nitride finishProperly heat treatedFinal grind before plating9310 6.5 Grendel boltHeat treatedShot peenedH&M Black Nitride finishMPI4140 billet gas keyH&M Black Nitride FinishProperly seated with Grade 8 fastenersProperly staked to ensure reliability4140 Cam Pin nitride treated for wear resistanceBillet Machined ExtractorMachined from solid 4140 bar stock, heat treated and shot peenedPhosphate coated for reliable extractionExtractor insert includedO-Ring includedFiring pin precision machined from 17-4 H-900 Stainless Steel100% USA Made