Our M16 Spec AR-15 Bolt carrier group comes in various calibers including 5.56, 9mm, 7.62, 300Blackout and .223 Remington. Our Bolt Carrier is composed of 8620 tool steel and the bolt is 9310 Magnetic Particle Inspected (MPI). Both Gas Key and Extractor are 4140 Machined. Finish is Salt Bath Nitride.
Gas keys are staked to the military print on our hydraulic staking machine ensuring consistency in staking. Installed with Permatex around the gas port per the print. Our Bolt carrier group is fully Mil-Spec.
|Dimensions||6 × 3 × 2 in|