Bolt assembly machined from either Mil-Spec Carpenter 158® steel, shot peened for increased strength per Mil-Spec, includes Mil-Spec 4140 billet tool steel extractor w/ spring and viton o-ring, Mil-Spec ejector and spring.

HPT (High Pressure Batch Tested) and MPI (Magnetic Particle Inspected).

Complete Mil-Spec Bolt includes:

  • Mil-Spec Carpenter 158® steel bolt
  • Shot Peened for Increased Strength per Mil-Spec
  • Tool Steel Extractor Assembly (spring with viton insert, pin, extractor)
  • Mil-Spec Ejector Assembly (ejector, spring, roll pin)
  • Gas Rings – Set of 3
  • Comes Assembled