BCA's Bolt carrier groups come MPI inspected. Perfect for your next 6.5 Grendel build.Specifications:Brand Bear Creek ArsenalCaliber / Gauge 6.5 GrendelCarrier Style StandardPlatform AR-15 Bolt Finish ParkerizedBolt Material 9310 Steel Carrier Finish Black NitrideGas Key Staked Magnetic Particle Inspection Yes
