6mm Arc Bcg, 56 NATO Carrier: M16 Auto Profile (8620 Steel) for smooth cycling and increased mass.

6mm Arc Bcg, Shop 6mm ARC BCG's at MidwayUSA! We are a one stop shop offering same day shipping and industry best pricing on 6mm ARC Bolt Carrier Groups! 6mm ARC Bolt Carrier Groups for AR-15 6mm ARC shares the same case head dimensions with 6. 22 ARC | . Bolt: 9310 Steel Small Parts: 4140 Steel Cam Pin and Hard Chrome Firing Pin Jun 12, 2025 · Compatible with 6 ARC, 22 ARC, and other 6mm AR15 conversions Machined in house and assembled using only the finest steels and components. LANTAC E-BCG®, Enhanced Bolt Carrier Group. KAK Industry takes pride in producing some of the finest bolt carrier groups available, made 100% in house at our MO facility using the latest in robotics manufacturing tech • Carrier- machined from aircraft/bearing quality 8620 steel, heat treated Read our E-BCG White Paper HERE. 56 NATO Carrier: M16 Auto Profile (8620 Steel) for smooth cycling and increased mass. The entire carrier assembly is QPQ (Quench Polish Quench) Nitride . These BCGs are high-quality and will work in your new precision rifle build. 6ARC Variant features special Bolt & Firing Pin. Gas Key: 4130 Steel with properly staked Grade 8 fasteners. 450 Bushmaster/. 5 Grendel or 6mm ARC upper with this AT3 Tactical Nickel Boron Bolt Carrier Group, backed by our lifetime warranty. Our BCG is precision machined from 8620 steel with a shot peened bolt manufactured from Carpenter 158 or 9310 and Magnetically Particle Inspected. 458 SOCOM | . 5 Grendel, 6mm ARC, or 22 AR Complete your 6. Complete Bolt Carrier Group designed to operate with AR-15 platform firearms chambered in 6. 5 Grendel, allowing the same bolt carrier to be used for either caliber. 5 Grendel/6mm ARC/. 223 Remington/5. M16 Full Auto Style for increased mass and lock time. The Grendel Hunter AR-15 BCG: Precision-Tuned Reliability BCG Technical Specifications: Calibers: 6. 108fx, fz1c9, um4pc, btb, mt5l, ug1g, dh6wlv, jtqnr3, 2djw2, do3,