Our .308 / 7.62 Bolt Carrier Group is the perfect firing mechanism for your big-bore rifle build. This high quality BCG features a Black Nitride finish is MPI/HPT and now includes a laser engraved Aero Precision ‘A’ logo! – Carrier Features: – Machined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt) – Finish: Black Nitride – advanced lower friction coating that minimizes the need for lubricants and cleaning – Gas Key: 4130 Steel attached with Grade 8 hardware and properly staked – Firing Pin: Machined from 8740 steel and hard chrome coated – Forward Assist serrations – Laser engraved Aero Precision logo – Carrier fits AR .308 compatible style AR Uppers and Rifles – Bolt Features: – Material: Case Hardened 9310 Steel – Finish: All bolt components are shot peened and black nitride coated – Extractor: Machined from 4340 Steel with double o-rings and double springs – Magnetic Particle Inspected and High Pressure Tested – High pressure bolt – external surfaces are CNC ground after heat treat for a precision fit and firing pin hole diameter is reduced to .070 – Multi-caliber bolt designed to function with .308 7.62×51 .338 Federal and other .308 based cartridges. – BCG Includes: – Bolt carrier – Complete bolt – Firing pin – Cam pin – Retaining pin
