.458 Bolt Carrier Group Nitride QPQ

Prime Weaponry

$ 99.95 $ 149.95


This is our 458 SOCOM Bolt Carrier Group. This has the M16 Full Auto rated Carrier with an S7 Tool Steel Extractor for not only reliability but long lasting performance. This is a Mil-Spec Bolt Carrier Group treated with our Nitride QPQ process having an overall hardness of 75 Rockwell.


- 8620 Steel Carrier

- 9310 Vac-Arc Steel Bolt

- 4340 Steel Cam Pin

- S7 Tool Steel Extractor

- 4140 Steel gas Key

- Mil Spec Spring kit

- MPI (Magnetic Particle Inspection) Tested

- Nitride QPQ treated