The AR15 .223 / 5.56 / 350 Legend / 300 Blackout MPI Tested Black Nitride Bolt Head with Phosphate Extractor offers a 9310 Steel MPI Tested bolt with Nitride finish that will not flake off, and produces less friction while increasing the life of the bolt head.
- .223 / 5.56 / 350 Legend / 300
- AISI 9310 VAR (vacuum arc remelt) moly, nickel steel
- Carbon/fouling relief area for high fire rates
- Black Nitride finish on bolt head and extractor
- Weight 0.113 lbs
- Dimensions 3 × 1 × 1 in
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