AR 15/M16 Bolt Carrier Group 6.8 SPC .224 Valkyrie Black Nitride

AR 15/M16 Bolt Carrier Group 6.8 SPC .224 Valkyrie Black NitrideThese Black Rifle Depot AR 15 bolt carrier group is the perfect BCG for your next AR 15 build. Properly built, no corners cut and 100 percent made in the USA. With a lifetime warranty, you can't go wrong with the bolt carrier groups.Features:M16 / AR15 6.8 SPC & .224 Valkyrie8620 M16 style carrierH&M Black Nitride finishProperly heat treatedFinal grind before plating9310 6.8SPC / .224 Valkyrie 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 MadeNOT COMPATIBLE WITH 5.56/.223/.300 (6.8SPC/.224 Valkyrie ONLY)