Cryptic .223 / 5.56 / .300 AAC Blackout Bolt Carrier Group (BCG) Up to $13.25 Off, Coupon Available w/ Free S&H — 2 models

Please Note: Due to the nature of this particular coating process, every BCG will have a unique look.

Coated bolt carrier group (full auto version) for AR15, M16, or M4 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. 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 .223 / 5.56 / .300 AAC Blackout Bolt Carrier Group (BCG):

Features of Cryptic .223 / 5.56 / .300 AAC Blackout Bolt Carrier Group (BCG)

• Coefficient of Friction 0.2
• Hardness 3200 Vickers
• Max Temperature 750? F
• Thickness 2-3 microns
• Reduced Carbon Fouling
• Easier Cleaning

Package Contents:

• Cryptic .223 / 5.56 / .300 AAC Blackout Bolt Carrier Group

What firearm models does the manufacturer say Cryptic .223 / 5.56 / .300 AAC Blackout Bolt Carrier Group (BCG) is compatible with?