Designed by Barrett Firearms in an attempt to create an optimal special operations medium range carbine. The barrel is fitted with a flip up hooded adjustable post front sight. The upper receiver is fitted with a A.R.M.S. SIR system, and a flip up A.R.M.S. two leaf, adjustable rear back up peep sight. Chambered for the 6.8 mm Remington SPC round, and using a proprietary all steel magazine. Includes an extra magazine.