Enhance your AR .308 caliber build with the Guntec USA GT-BCG-308 Nitride Bolt Carrier Group, designed for reliability and performance. This MIL-SPEC BCG delivers superior durability and smooth operation under any conditions, making it an essential upgrade for serious shooters. Crafted from high-quality materials for exceptional strength Nitride finish for improved corrosion resistance Standardized MIL-SPEC dimensions for easy installation Enhanced bolt locking for consistent firing Compatible with most AR .308 platforms Elevate your shooting experience with the precision engineering of the GT-BCG-308.