Cryptic AR15/M16/M4 .223/5.56/.300 AAC Blackout Bolt Carrier Group Left Handed Black Nitride

Cryptic AR15/M16/M4 .223/5.56/.300 AAC Blackout Bolt Carrier Group Left Handed Black Nitride. BCG includes heat treated gas key. Gas key is secured to carrier with Grade 8 fasteners and properly staked per Mil-Specs. This ensures a strong staking and proper gas system functioning. The bolt assembly is CNC machined from Mil-Spec Carpenter No. 158 steel and shot peened for increased strength per Mil-Spec; includes tool steel extractor with spring and viton O-ring; firing pin chromed finished with firing pin retaining pin and cam pin. HPT (High Pressure Batch Tested) and MPI (Magnetic Particle Inspected). Specifications for Cryptic AR15/M16/M4 .223/5.56/.300 AAC Blackout Bolt Carrier Group: Manufacturer: Cryptic Finish: Matte Caliber: .300 AAC Blackout .223 Remington Gun Make: AR Platform Gun Model: M16 M4 AR-15 Features of Cryptic AR15/M16/M4 .223/5.56/.300 AAC Blackout Bolt Carrier Group Mil-Spec BCG Machined from 8620 Aircraft Quality Steel and heat treated to 60-61 RC Mil- Spec Gas Key Key Staked with Grade 8 Screws per Mil-Spec Mil-Spec Carpenter 158 Bolt w/ Spring and Ejector Tool Steel Extractor w/ Spring and viton O-ring Mil-Spec Firing Pin w/ Chrome Finish Mil-Spec Cam Pin Full Auto Carrier (Backward compatible with all semi-auto rifles) Package Contents: Cryptic AR15/M16/M4 .223/5.56/.300 AAC Blackout Bolt Carrier Group What firearm models does the manufacturer say Cryptic AR15/M16/M4 .223/5.56/.300 AAC Blackout Bolt Carrier Group is compatible with? The manufacturer says that Cryptic AR15/M16/M4 .223/5.56/.300 AAC Blackout Bolt Carrier Group is compatible with AR-15 M4 M16Cryptic CC-0106-LH: AR15/M16/M4 .223/5.56/.300 AAC Blackout Bolt Carrier Group Left Handed Black Nitride