Description
Bolt:
AISI 9310 alloy steel
MPI Inspected
Extractor: Shot Peened Hardened D2 tool steel
O-Ring: Mil-Spec
Gas rings (3): Mil-Spec
Finish: Nickel Boron
Carrier:
8620 steel
Heavy Duty M16 design
Grade 8 Gas Key Screws, Staked
Gas Key Material: 4140
Finish: Nickel Boron
Cam:
8620 steel
Finish: Nickel Boron
Firing pin:
mil-spec firing pin made from centerless ground 8740 steel, hard chrome coated
Our bolts are offered with a lifetime warranty with proof of purchase from FIMS Firearms.
