F5 MFG AR-15 Bolt Carrier Group

Introducing our MIL-SPEC AR-15 Bolt Carrier Group.   Improvements include using 9310 tool steel for the bolt, nitriding the assembly for greater surface hardness, less resistance, and superior corrosion resistance compared to typical chrome and bolt carrier groups. All bolts are fully MPI tested to ensure the material is sound and without defects. Bolt lugs are chamfered 45 degrees to ensure reliable action for even the highest pressure loads and fast lightweight actions    Bolt Carrier Group: 9310 Tool Steel Bolt Full MIL-SPEC Heat Treatment Shot Peened to MIL-SPEC Magnetic Particle Inspection (MPI) Back of Lugs Chamfered for Reliability Spring, Insert, & “Crane” O-Ring Installed Salt Bath Nitrided Bolt & Carrier S7 Extractor Super finished Carrier Body Full Auto Compatible Forward Assist Serrations