Aero Precision 5.56 Nickel Boron BCG Forward Assist Machined Steel Staked Mil-Spec Gas Key Shot Peened MPI

Aero Precision AR15 5.56mm Bolt Carrier Group Nickel Silver. 56 Complete BCG is one of the highest-rated and most popular Bolt Carrier Group BCG. That's because changing out the BCG is one of the easiest AR15 modifications you could make and Aero Precision is synonymous with quality. These Bolt Carrier Groups are constructed from 8620 tool steel (and 9310 steel for the bolt) shot peened and magnetic particle inspected so you can trust that they're built to last. The Aero Precision AR15 5.56mm Bolt Carrier Group features military specifications (mil-spec) including the gas key and extractor spring. Also in the carrier itself Aero machined forward assist serrations. It's also available in various high-end finishes like phosphate nitride and nickel boron but no matter the finish it gets polished so in the end you have an easier time cleaning dirt and carbon buildup. If you plan on modifying your AR rifle grab the Aero Precision 5.56 Complete Bolt Carrier Group BCG today Specifications for Aero Precision AR15 5.56mm Bolt Carrier Group: Manufacturer: Aero Precision Cartridge: 5.56x45mm NATO Gun Make: AR Platform Gun Model: AR-15 Condition: New Bolt Material: 9310 Steel Carrier Material: 8620 Steel Country of Origin: USA Features of Aero Precision AR15 5.56mm Bolt Carrier Group: M16-cut carrier Machined from 8620 Tool Steel (Carrier) and 9310 Steel (Bolt) Carrier has forward assisted serrations Properly staked gas key Shot peened HPT tested/MPI marked Black o-ring insert on extractor High quality BCG Shrouded firing pin Forged Mil-Spec gas key attached with Grade 8 hardware and Properly staked. 5.56 Bolt is shot Peened and MPI Mil-Spec Extractor Spring black extractor insert Viton O-Ring Tool Steel Extractor High quality BCG Package Contents: Aero Precision AR15 5.56mm Bolt Carrier Group Aero Precision APRH100070: AR15 5.56mm Bolt Carrier Group Nickel Silver