Cryptic AR10 Steel Bolt Carrier Manganese Phosphate

Cryptic AR10 Steel Bolt Carrier MnPhos - Coated bolt carrier group (full auto version) for AR10 (308 WIN / 7.62x51mm / 6.5 Creedmoor) machined from Mil-Spec 8620 aircraft quality steel with shrouded firing pin and Mil-Spec chrome lined interior. - BCG includes the proper chrome lined and 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. Specifications for Cryptic Steel Bolt Carrier: - Manufacturer: Cryptic - Fabric/Material: Steel - Gun Make: AR Platform - Condition: New - Compatible w/ any DPMS LR308 platforms - Mil-Spec Bolt Carrier Machined from 8620 Aircraft Quality Steel and heat treated to 60-61 RC - Mil-Spec Chrome Lined Carrier Interior - Mil-Spec Chrome Lined Gas Key - Key Staked with Grade 8 Screws, per Mil-Spec - Full Auto Carrier (Backward compatible with all semi-auto rifles) Package Contents: - Cryptic Steel Bolt Carrier What firearm models does the manufacturer say Cryptic Steel Bolt Carrier is compatible with? The manufacturer suggests that Cryptic Steel Bolt Carrier is compatible with AR-10, AR-15