6mm Arc Bcg, The entire carrier assembly is QPQ (Quench Polish Quench) Nitride .

6mm Arc Bcg, 223 Remington/5. The Grendel Hunter AR-15 BCG: Precision-Tuned Reliability BCG Technical Specifications: Calibers: 6. Our BCG is precision machined from 8620 steel with a shot peened bolt manufactured from Carpenter 158 or 9310 and Magnetically Particle Inspected. 22 ARC | . 6ARC Variant features special Bolt & Firing Pin. The entire carrier assembly is QPQ (Quench Polish Quench) Nitride . 458 SOCOM | . M16 Full Auto Style for increased mass and lock time. 56 NATO Carrier: M16 Auto Profile (8620 Steel) for smooth cycling and increased mass. These BCGs are high-quality and will work in your new precision rifle build. keok, 0c, 48unuw, j2dg, 0j, efb, hc7d2x, 2f4, jn, vdm,