Product Description The LANTAC USA E-BCG (Enhanced Bolt Carrier Group) for the 6mm ARC (Advanced Rifle Cartridge) is a precision-engineered upgrade for your AR-platform rifle. Featuring a special 6ARC-specific bolt and firing pin, this BCG is precision machined from 8620 steel with a shot-peened bolt manufactured from Carpenter 158 or 9310 steel, and is Magnetic Particle Inspected (MPI) for quality assurance. The entire carrier assembly receives a QPQ (Quench Polish Quench) Black Nitride coating - a specialized form of Nitrocarburizing Case Hardening - delivering an extremely hard, smooth surface with outstanding corrosion resistance and a low coefficient of friction. LANTAC&';s patented design incorporates unique shrouded, forward-facing gas ports that have been resized to vent gas differently than a standard carrier. The result is a system that runs flatter, produces a smoother energy pulse, and delivers a softer start to carrier movement. Designed in an M16 Full Auto style for increased mass and improved lock time, this BCG is built for reliability and superior performance. Product Highlights 6ARC-Specific Design: Features a specially engineered bolt and firing pin optimized for the 6mm Advanced Rifle Cartridge platform. Premium Steel Construction: Carrier precision machined from 8620 steel; bolt manufactured from Carpenter 158 or 9310 steel with shot peening and Magnetic Particle Inspection. QPQ Black Nitride Coating: Full-assembly Nitrocarburizing treatment creates an ultra-hard, low-friction surface with superior corrosion resistance. Patented Gas Port Technology: Shrouded, forward-facing, and resized gas ports produce flatter running, smoother energy pulses, and softer carrier movement compared to standard BCGs. M16 Full Auto Style: Increased carrier mass and improved lock time for enhanced reliability and consistent performance. Specs Brand: LANTAC USA Model: E-BCG Enhanced Bolt Carrier Group Caliber/Variant: 6mm ARC (6ARC) Carrier Material: 8620 Steel Bolt Material: Carpenter 158 or 9310 Steel Bolt Finish: Shot Peened, Magnetic Particle Inspected (MPI) Coating: QPQ (Quench Polish Quench) Black Nitride Style: M16 Full Auto Gas Port Design: Shrouded, Forward-Facing, Resized (Patented) Length: 10.95 in Width: 3.85 in Height: 1.70 in Weight: 1.7 lbs MPN: 01-UP-6ARC-NIT-EBCG UPC: 640117876770 Note: No Direct Ship to California Disclaimer: We strive to provide accurate and up-to-date product descriptions, specifications, and images; however, errors or omissions may occasionally occur. We are not responsible for any inaccuracies or discrepancies in the content provided. If you notice anything incorrect or unclear, please contact us so we can correct it. When in doubt, we recommend verifying details directly with the product&';s manufacturer. ]]>