100% HPT & MPI
Shot Peened
Sprinco 5-Coil Heavy Extractor Spring
Black Insert 
M16 Carrier

Our bolts are made from Carpenter 158® Steel. Our bolts are 100% high pressure tested and magnetic particle inspected. Each bolt is shot peened and comes with a Sprinco 5-Coil heavy extractor spring and black spring insert.

Our M16 profile Bolt Carriers are machined to USGI specifications.  Our M16/M4 carriers include proper Mil-Spec gas keys.  Our Gas Key is chrome lined and heat treated per GI specifications.  The Gas Key is secured to the carrier via USGI domestic manufactured Grade 8 fasteners and properly staked per Military Specifications.  These properly hardened parts insure a strong staking and proper gas system functioning.

Each bolt and carrier assembly is treated with durable NP3 plating which creates a permanently lubricious surface which eliminates the need for grease, oil or any wet lubrication.