Sturm, Ruger & Co., Inc.'s SR-556/6.8 has a new chambering in the SR-556 two-stage, piston-driven, AR-Style rifle. The new SR-556/6.8 brings the power and downrange authority of the 6.8 SPC cartridge in a two-stage piston rifle that runs cooler and cleaner than traditional gas-driven, AR-style rifles.
Packaged with one five-round magazine and two twenty-five round magazines, the SR-556/6.8 is an ideal hunting rifle for those who appreciate the versatility of the customizable and ergonomic AR-style platform. The 6.8 SPC has ample power for hunting medium-sized game, and the greater muzzle and downrange energy enhances the capability of the SR-556 in defensive or tactical roles as well.
The SR-556/6.8 retains all the features of the original SR-556 that make it an outstanding value in the AR-style rifles. The patent-pending, two-stage piston delivers a smooth power stroke to the one-piece bolt carrier, which softens recoil, aiding both shooter comfort and durability of the rifle. The four-position gas regulator allows the shooter to tune the rifle to the ammunition being fired and environmental conditions present. A chrome-lined, cold hammer forged barrel provides accuracy and longevity, Troy Industries Folding Battlesights, Quad Rail and rail covers add considerable value to the package, as does the Hogue Monogrip, six-position stock, sight adjustment tool, and the padded carry case, all included with the SR-556/6.8.
The SR-556/6.8 maintains the mid-length gas system and the heavy (0.850 inches) barrel contour under the handguard of the original SR-556. The 1:10 twist barrel has a standard SAAMI 6.8 SPC chambering, is 16.12 inches long, is threaded 5/8-24, and is capped with the effective and distinctive Mini-14/SR-556 flash suppressor. The SR-556/6.8 weights 7.75 pounds without a magazine.