
The Mk 11 Mod 0 is a semi-automatic sniper rifle used by the United States Navy SEALs and other special operations forces. It was developed by Knight's Armament Company as a variant of the SR-25 design. The Mk 11 is chambered in 7.62x51mm NATO and features a free-floated barrel and an adjustable gas system. It has a shorter barrel than the M110 SASS and uses a fixed stock rather than the adjustable stock of the M110. The rifle is known for its exceptional accuracy for a semi-automatic platform.
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The Knight's Armament Company SR-25 (Stoner Rifle 25) is an American semi-automatic precision rifle designed by Eugene Stoner in the early 1990s. Chambered in 7.62×51mm NATO, it is the direct predecessor to the U.S. military's M110 SASS and is widely used by special operations forces and civilian precision shooters.
The Knight's Armament Company M110 Semi-Automatic Sniper System (SASS) is the U.S. Army's standard semi-automatic sniper rifle, chambered in 7.62×51mm NATO. Based on the SR-25 platform, it delivers sub-MOA accuracy in a semi-automatic package.
The Heckler & Koch G28 is a German designated marksman rifle chambered in 7.62×51mm NATO, derived from the HK417 battle rifle. It was adopted by the U.S. Army as the M110A1 CSASS (Compact Semi-Automatic Sniper System), replacing the KAC M110 in frontline service.