Caliber: 6.5 Creedmoor, 7.62 NATO. Barrels: 14.5”, 16”, free-floated, hammer-forged, 1:10 twist, chrome-lined. Similar to SR-15. Continuous top MILSTD-1913 rail, 7.62mm open brake compatible with KAC 7.62mm QDC Signature Reduction Devices. Models: K5 (7.62 NATO, 14.5” hybrid light-profile barrel, 8.34 lbs., 33.1” to 37.25”); K7 (6.5 CM, 14.5” dimpled hybrid medium-profile 5R Cut Rifled 416R barrel, 8.63 lbs., 33.1” to 37.25”); K3 (7.62 NATO, 16” barrel otherwise similar to K7, 8.7 lbs., 34.5” to 38.75”); K6 (6.5 CM, 16” barrel similar to K7 and K3, 8.9 lbs., 34.5” to 38.75”). A2 has a 20” barrel in 7.62 NATO, 9.42 lbs. A3 has 22” barrel in 6.5 CM, 9.89 lbs.