Aero Precision .224 Valkyrie/6.8 SPC Bolt Carrier Group, Complete - Black Nitride

Aero Precision .224 Valkyrie/6.8 SPC Bolt Carrier Group, Complete - Black NitrideThe Aero Precision .224 Valkyrie Bolt Carrier Group for AR-15 rifles is made from high quality materials with quality assurance measures like high pressure testing and magnetic particle inspecting. The bolt assembly is machined from Carpenter 158 tool steel and tested to ensure it can withstand thousands of high-pressure rounds. The Carrier assembly is machined from 8620 steel and the entire BCG is magnetic particle inspected to ensure every dimension is as precise at can be. The black Nitride finish increases hardness and creates an extremely smooth surface for ease of cleaning and improved reliability. If you want to build a no frills, reliable duty rifle, you can't go wrong with this Aero Precision BCG.Features:Compatible with 6.8 SPC and .224 ValkyrieM16 cut and full auto rated8620 steel carrierCarpenter 158 tool steel boltMPI and HPTBlack Nitride finishProperly staked gas keyChrome lined gas key and firing pin channelShot peened bolt faceBlack O-ring extractor insertSpecifications:Bolt Finish: Salt Bath NitrideBolt Material: Carpenter 158 SteelBrand: Aero PrecisionCaliber Gauge: .224 ValkyrieCarrier Finish: Salt Bath NitrideCarrier Material: 8620 Carpenter SteelCarrier Style: M16 Bolt CarrierHigh Pressure Tested: High Pressure TestedMagnetic Particle Inspect: Magnetic Particle InspectedPlatform: AR-15Weight: 11.52 oz.