LanTac Enhanced 6mm ARC Bolt Carrier Group Black Nitride - LANTAC 01UP6ARCNITEBCG

LanTac Enhanced Bolt Carrier Group designed for 6mm ARC, 223, and 556 platforms with a specialized bolt and firing pin optimized for this caliber. Precision machined from 8620 steel with shot peened bolt (Carpenter 158 or 9310 material) and magnetic particle inspection for quality assurance. Features M16 full auto style design for increased mass and lock time, with QPQ nitride coating for superior corrosion resistance and durability.