6.5 Type II Grendel Nitride Bolt Assembly 223bcg - Tool Steel Extractor Nitride

- Tool Steel Extractor Nitride Coated

We use a 9310 Vac-Arc steel Bolt over the Mil-Spec Carpenter 158 Bolt because it's stronger and after many test firings and torture tests we've found it to not only last longer but to be more durable

- 9310 Vac-Arc Steel Bolt Nickel Boron Coated

- Enhanced Firing Pin Retaining Pin

62x39 Bolt Nitride QPQ

6.5 Type II Grendel Nitride Bolt Assembly 223bcg - Tool Steel Extractor NitrideMade from 9310 Vac Arc Premium Carburizing Steel which has a high core hardness and high fatigue strength unlike standard Hot cold rolled 9310 steels. Fully Assembled Bolt Shot Peened MPI (Magnetic Particle Inspected) Power Spring Kit Black Nitride Coated