Aero Precision Complete Bolt Carrier Group .308 Win Nickel Boron

Aero Precision .308 Winchester Bolt Carrier Group Nickel Boron. 308 Complete Black Nitride Bolt Carrier Group BCG is ideal for your big-bore rifle build. These Bolt Carrier Groups from Aero Precision are MPI/HPT inspected and bear a laser engraved Aero Precision logo. The carrier of the Aero Precision .308/7.72 Complete BCG is machined from 8620 steel and then case hardened. All parts of the Aero Precision Complete .308/7.72 Bolt Carrier Group BCG are black nitride coated to reduce friction during use and ensure long-lasting reliable performance. Specifications for Aero Precision .308 Winchester Bolt Carrier Group: Manufacturer: Aero Precision Cartridge: .308 Winchester Hand: Right Condition: New Weight: 18.2 oz Bolt Material: 9310 Steel Carrier Material: 8620 Steel Caliber: .308 Caliber Features of Aero Precision .308 Winchester Bolt Carrier Group BCG: 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 7.62x51 .338 Federal and other .308 based cartridges. Package Contents: Bolt carrier Complete bolt Firing pin Cam pin Retaining pin Aero Precision APRH100185: .308 Winchester Bolt Carrier Group Nickel Boron