Rockfire AR-15 Nickel Boron Bolt Carrier Group – 5.56 Carpenter

Description

Rockfire AR15 Nickel Boron bolt carrier group is the perfect BCG for your next build and is compatible with any AR15 build. The nickel boron coating provides a very slick surface that makes for easier cleaning and increases reliability. Properly built, no corners cut.

8620 M16 style carrier
Nickel Boron Coating
Heat treated
Final grind before plating
Carpenter 158 5.56/.223 bolt
Heat treated
Shot peened
Nickel Boron Coating
MPI
4140 Billet Gas key
Nickel Boron Coating
Properly seated with Grade 8 fasteners
Properly staked
4140 Cam Pin
Nickel Boron Coating
Tool Steel Extractor
Phosphate coated
Extractor insert included
O-Ring included
17-4 H-900 Stainless Steel Firing Pin
100% American Made