Description
AR-15 Nickel Boron Bolt Assembly – MPI
This back up AR15 Bolt Assembly is MPI inspected and comes plated in EXO NiB, which is the leading industry Nickel Boron used by FailZero and other well known manufacturers, such as Spikes Tactical and Toolcraft. Be weary of other companies that use inferior nickel boron on their replacement bolts, as other plating companies are notorious for having adhesion issues. This Nickel Boron Plated bolt will NEVER chip, flake or peal!
- Enhanced 9310 Steel (Bolt)
- Mil-Spec Extractor Spring, black extractor insert, Viton O-Ring
- Tool Steel Extractor
- Caliber: .223 / 5.56 / 300 Blackout
- Bolt is shot Peened and MPI
