The 6mm ARC was designed by Hornady to be the highest performance long-range cartridge available in a standard AR platform rifle. Initially tested and fielded by US Special Operations forces, the 6mm ARC utilizes efficient, high-BC bullets to deliver unprecedented long-range performance with a wide variety of available bullets. Commercial 6mm ARC loads feature bullet selected to deliver ideal performance for hunting, match shooting, and personal protection applications. The 6mm ARC uses commonly available 6.5 Grendel magazines/bolts. Wilson Combat will offer WC-15 rifles with our match-grade, 18" fluted/threaded barrels in two profile options. All barrels will be rifled with a 1-7.5" twist.