M110 Semi Automatic Sniper System (M110 SASS)

The M110 Semi Automatic Sniper System (M110 SASS) is an American semi-automatic sniper rifle/designated marksman rifle that is chambered for the 7.62×51mm NATO round.The rifle is similar to the SR-25/Mk 11 Mod 0, but differs significantly in buttstock and rail system design. The SR-25, Mk 11 Mod 0, and M110 are based loosely on the original AR-10 developed by Eugene Stoner but feature additional refinements instituted by KAC to maximize parts commonality with the AR-15 design, improve weapon reliability, and increase accuracy.

The main differences between the Mk 11 and M110 are improvements suggested by a user group meeting between NAVSPECWAR, USASOC and USA in 2007: The rail system used: the KAC Free Floated RAS on the Mk 11 is replaced by a URX modular rail system with integral folding front 600-meter back-up iron sight. The M110 buttstock: fixed, though the buttplate is adjustable for length of pull to match user preferences. Adjustment can be made without tools via a notched hand-tightened knob on the right-hand side of the stock.

This feature was added during the change from XM110 to M110. The fixed buttstock also features integral quick-detachable sling swivel sockets located on each side of the stock near the rear of the lower receiver. The addition of a flash hider to the barrel of the M110, which also necessitates a modified QD Suppressor unit similar to that on the Mk 11. The M110's use of KAC's one-piece 30 mm scope mount instead of two separate scope rings.

Cartridge 7.62×51mm NATO Action Gas-operated, rotating bolt Rate of fire Semi-automatic Muzzle velocity 783 m/s (2,570 ft/s) with 175 gr. M118LR Effective firing range 800 metres (875 yd) (point targets) Feed system 10 or 20-round detachable box magazine
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