Lantac USA M-SPEC Bolt Carrier Group .308/7.62 NATO Black Nitride

The Lantac USA M-SPEC Bolt Carrier Group is a precision-machined BCG built to milspec dimensions and tolerances for AR-10 and LR-308 pattern rifles chambered in .308 Winchester / 7.62 NATO.

Manufactured in the USA, the M-SPEC carrier is machined from 8620 steel and uses an M16 full-auto style profile for increased mass and improved lock time. The bolt is manufactured from Carpenter 158 steel and shot peened for long service life, and the entire assembly is finished in black nitride for corrosion resistance, lubricity, and easy cleaning.

Designed as a drop-in milspec replacement or upgrade for AR-10, LR-308, and M16-pattern rifles, the M-SPEC BCG delivers professional-grade reliability in .308 Winchester / 7.62 NATO.