AR15/M16 - 5.56/223 C158 Bolt Carrier Group Nitride (Mil-spec bolt)

Prime Weaponry

$ 99.95 $ 134.95


Carrier made with 8620 Steel and bolt made from mil-spec Carpenter 158 Steel. The nitride coating is the strongest plate available, it's the same protective finish that's used in gun barrels and CNC tool protection. 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.


- C158 Bolt (mil-spec) 

-Bolt Laser Engraved with "C158 MPI"

- AR15 and M16 Compatible

- 5.56 / 223

- 8620 Steel Carrier Nitride Coated

- 4340 Steel Cam Pin Nitride Coated

- 4140 Steel Gas Key Nitride Coated

- Tool Steel Extractor Nitride Coated

- Shot Peened

- MPI (Magnetic Particle Inspected)

- HPT (High Pressure Tested)

- Gas key staked to Mil-Spec Standards

- Grade 8 Hardened Fasteners

- Extractor Insert with upgraded Crane O-Ring

- Power Spring Kit