Armalite AR10 SASS (Semi-Automatic Sniper System), Semi-automatic Rifle, AR, 308 Winchester/762X51, 20 Stainless Steel Barrel, 1:10 RH Twist, Anodized Finish, Black, Armalite Tactical Brake, 20 Rounds, 1 Magazine A10SBF2 The SuperSASS (Semi-Automatic Sniper System) was originally designed for use by the US Military but a civilian model is available to discerning shooters who demand superb accuracy. The SuperSASS Gen II has a fully adjustable stock and an adjustable gas system built to accommodate suppressed and un-suppressed fire. The SuperSASS Gen II is the ultimate tactical rifle system on the market.