The Lantac Enhanced Bolt Carrier Group for 6mm ARC (brand part no. 01-UP-6ARC-NIT-EBCG) pairs a caliber-specific bolt and firing pin with an M16-profile carrier for added mass and lock time. Lantac precision machines the carrier from 8620 steel and shot-peens the bolt from Carpenter 158 or 9310 steel, then Magnetic Particle Inspects it before finishing the whole assembly in QPQ Nitride black for increased corrosion resistance and a low coefficient of friction. The carrier’s patented and patent-pending shrouded, forward-facing gas ports vent gas differently than a standard carrier, giving the system a flatter-running, smoother energy pulse with a softer start to carrier movement.

Key Specifications

• Includes a 6mm ARC-specific bolt and firing pin.
• M16-profile carrier geometry adds mass and lock time for reliability.
• Precision machined from 8620 steel.
• Bolt is shot-peened from Carpenter 158 or 9310 steel and Magnetic Particle Inspected.
• Finished in QPQ Nitride black for corrosion resistance and low friction.
• Patented shrouded, forward-facing gas ports vent gas differently than a standard carrier.
• Runs with a flatter, smoother energy pulse and a softer start to carrier movement.

Frequently Asked Questions

Is this BCG caliber-specific? Yes, it includes a 6mm ARC-specific bolt and firing pin.

What finish does this carrier use? It is finished in QPQ Nitride black for corrosion resistance and reduced friction.

Buy the Lantac Enhanced BCG, 6mm ARC

A caliber-matched bolt and a carrier engineered to run flatter are exactly what a 6mm ARC build needs for consistent cycling. Browse more AR bolt carrier groups from Lantac USA and order it from our Lubbock, Texas gun shop as soon as it’s ready to ship.