Dark Storm Industries DS-15 Mil-Plus MFR Dual Ejector AR-15 .300 AAC Blackout/5.56x45mm NATO Bolt Carrier Group Black

Dark Storm Industries DS-15 Mil-Plus MFR Dual Ejector AR-15 .300 AAC Blackout/5.56x45mm NATO Bolt Carrier Group Black. This bolt carrier group uses the best US produced metals and is held true to the strict Mil-Spec dimensional tolerances with 100percent quality control inspection of over 100 points in the machining process. Dark Storm Industries does not do "batch" inspections where only a few parts are checked. This process takes more time and results in more scrap but the result is every part