Brownells partnered with Stag Arms to bring this new Stag-15 rifle to market chambered in the 6mm ARC cartridge from Hornady, which is designed to provide the most capability possible from an AR-15-size receiver. The rifle is designed to be the best balance of features, so you'll get a gun that's lightweight and easy to handle while still being more than capable at longer distances. Each Stag Arms Stag-15 chambered in 6mm ARC is outfitted with a 16-inch barrel complete with a 1:7-inch twist rate designed to provide ideal performance with the higher ballistic coefficients of 6mm projectiles. The gun itself is built with a mid-length gas system that reliably cycles the action Mfg: Stag Arms