AR .308 Cal Nitride Skeletonized Low Mass Bolt Carrier Group (Tin Coated)

Description

This AR .308 Cal Low Mass Bolt Carrier Group is engineered for precision and reliability in 7.62×51 / .308 caliber platforms. Constructed from 8620 Steel for the carrier and gas key, it features a 9310 Hardened Steel bolt and an S7 tool steel hardened extractor. The firing pin is machined from 17-4 Stainless Steel and heat treated to H900 condition to ensure consistent ignition under high-stress cycling.

The unit arrives fully assembled with the gas key properly torqued and staked, ready for installation. Its skeletonized low mass design reduces reciprocating weight, which can contribute to smoother cycling and reduced felt recoil in .308 builds. The exterior features a Tin Coated finish, providing a durable, gold-hued surface that offers corrosion resistance and reduced friction.

Manufactured in the USA, every component undergoes rigorous quality control. The group is HPT/MPI Tested and marked to verify structural integrity and material soundness. This build kit is designed for experienced AR-15 builders seeking a robust, high-performance BCG for their .308 caliber upper receiver.