Aero Precision

Aero Precision's .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. The billet carrier, designed to fit AR .308 compatible style AR uppers and rifles, is machined from 8620 steel and case hardened. The advanced black nitride coating lowers friction and minimizes the need for lubricants and cleaning. The gas key is made of 4130 steel, attached with Grade 8 hardware, and properly staked. The firing pin is machined from 8740 steel and hard chrome coated. Forward assist serrations are included. The multi-caliber bolt in this group is designed to function with .308, 7.62x51, 6.5 Creedmoor, .338 Federal, and other .308 based cartridges. It's constructed from case hardened 9310 steel for long-lasting durability. All bolt components are shot peened and black nitride coated to reduce friction and wear. External surfaces are CNC ground after heat treat for a precision fit and the firing pin hole diameter is reduced to .070". The extractor is machined from 4340 steel with double o-rings and double springs. The bolt and accompanying parts are all magnetic particle inspected and high pressure tested. BCG includes: Bolt carrier, complete bolt, firing pin, cam pin, and retaining pin.