SOUTHPORT, Conn. — Sturm, Ruger’s new SR-556 autoloading rifle is a two-stage piston driven rifle that the company claims runs cleaner, cooler, and is easier to maintain than gas driven rifles. Chambered in 5.56mm NATO, the Ruger SR-556 also fires .223 Rem. ammunition.
The patent pending two-stage piston driven operating system in the Ruger SR-556 provides a power delivery stroke to the action and vents combustion residue out of the bottom of the gas block. The four-position adjustable gas regulator allows the operator to tune the rifle to specific ammunition and rifle conditions.
Comes with a heavy contour, 16-1/8” chrome-lined barrel forged from Mil-Spec 41V45 chrome-moly-vanadium steel, 1:9 twist rate, and an AC-556 flash suppressor.
A one-piece, ten-inch Troy Industries Quad Rail Handguard provides ample room for mounting sights, optics and accessories. Made exclusively for Ruger, this SR-556-specific handguard is pinned to the upper receiver and provides a rigid mount for the piston driven transfer rod.
The SR-556 is equipped with Troy Industries Folding BattleSights, a six-position telescoping M4-style buttstock that houses a Mil-Spec buffer and spring, Hogue Monogrip pistol grip, and three Troy Industries Rail Covers.
The barrel and gas block are chrome lined, while the bolt, bolt carrier, and extractor are chrome plated. The piston driven transfer rod is electroless nickel/Teflon coated. The flash hider and the exterior of the barrel, gas block, and regulator are manganese phosphate coated. All aluminum parts are Mil-Spec hard coat anodized. The SR-556 is supplied with three, thirty-round Magpul PMAG magazines.
The flat top upper receiver and barrel assembly is specific to the Ruger SR-556. The standard lower receiver is built with Mil-Spec components, including a single stage trigger. The lower receiver is compatible with AR-style magazines, grips, buttstocks, and fire control components.
The 7.9-pound (without magazine) Ruger SR-556 autoloading rifle is shipped in a padded carry case with hook-and-loop fasteners and internal magazine pockets.
MSRP is $1,995.
For more information on the Ruger SR-556 autoloading rifle, visit the SR-556 microsite at www.Ruger.com/SR556.
