This bolt carrier group is built to the highest standards out of the highest quality materials and thoroughly inspected to ensure they will last a lifetime of hard use.
Nickel Boron is a top of the line coating, with its superbly smooth finish. It is engineered to minimize on friction by cutting down the surface to surface contact between sliding parts. This finish not only reduces the friction, but it also dissipates heat, allowing for the least wear and tear. It also makes cleaning the bolt carrier group much easier.
• 8620 Carpenters Steel Carrier
• Nickel boron finish
• True Mil-Spec Dimensions
• Carpenters 158 steel bolt
• 4130 steel gas key with grade 8 staked screws
• 4140 steel extractor and cam pin
• Hard chrome ground 8740 steel firing pin
• Magnetic particle inspected
• M16 profile cut
• Lifetime Warranty