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- 9310 Vac-Arc Steel Bolt Nickel Boron 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
62x39 Bolt Nitride QPQ
If you're looking for a bolt carrier that's going to hold up against the roughest conditions then this bolt carrier group is the one for you
4340 Steel Cam Pin Nitride QPQ
6.5 Type II Grendel Nitride Bolt Assembly 223bcg - 9310 Vac-Arc Steel BoltMade 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
US$ 37.00
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US$ 541.61
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