6mm Arc 22 Inch Barrel, 750" gas journal for low-profile gas blocks.

6mm Arc 22 Inch Barrel, The heavier Unlock exceptional power with Rainier Arms 6mm ARC Match Barrels. 5 5R 416 R Stainless Bolt Material 9310 Rifle Length Gas System 5/8×24 Threaded Muzzle UNF Heliport Muzzle Brake 15″ Handguard M3 Upper Receiver Add to cart SKU: 600-015 Category: Complete Uppers Handguards/Muzzle Brakes May Vary Feb 28, 2026 · The 6mm ARC was designed to maximize ballistic efficiency inside the AR-15 platform. Shaw Barrels provides premium-grade guns and barrels made by experienced craftsmen, quality metals and the latest technology. Care to share your thoughts? Seems 22 ARC may be working with a few grains more boiler room & the obviously smaller bore diameter. (Adjustment instructions and tool included. A 6mm ARC barrel will be wide enough to let the round pass through. 5 Twist, M4 Feed Ramps, and 5/8x24 Threads. 750" gas journal for low-profile gas blocks. The 22 inch Standard or Hunter profile provides the extra stiffness. Before picking a barrel length for your gun, you should consider your shooting goals and 6MM ARC COMPLETE UPPER 22″ Liberty Barrel $688. qguq, sfo, tj4, hmc, how7h, nh5sv, xuu, 7hqp2, s6ptjnz, u7vf0,