The MK 13 Mod 7 is the US Navy SEAL and USMC Scout Sniper long-range precision rifle, built on a Accuracy International AXMC chassis with a .300 Winchester Magnum 27-inch barrel. It replaced earlier MK 13 variants and delivers consistent first-round hits beyond 1,200 meters. The folding chassis, adjustable cheek piece, and monopod make it highly adaptable to field conditions. Chris Kyle used earlier MK 13 variants in Iraq. Type: Rifle Action: Bolt-Action Caliber: .300 Winchester Magnum Capacity: 5 Year introduced: 2016, USA Weight: 15.4 oz Overall length: 49" Status: Active Military use: Yes Intended use: sniper, military, precision, long-range