The 6mm ARC is novel among rifle cartridges in that it's anything but an AR-15-design activity, works dependably out of standard-limit 24-or 17-round magazines, and stays supersonic past 1,000 yards in standard air. This permits a rifle loaded in this cartridge to be utilized for everything from tight situation fight (CQB) to expert rifleman missions while working on coordination for the units that convey it.