RUGER SR-556 5.56 NATO

This Ruger SR-556 is a 5.56 NATO/.223 Remington semi-automatic rifle configured in a New York-compliant setup. It features a fixed Thordsen-style stock/grip configuration and a non-threaded barrel, giving the rifle a distinctive compliant configuration while retaining the recognizable SR-556 platform and its piston-operated operating system.

The SR-556 is notable for Ruger’s use of a gas-piston operating system in an AR-pattern rifle, representing Ruger’s approach to the piston-driven rifle market. This rifle includes Ruger flip-up iron sights, an Eotech G33 Magnifier, two 10rd Magpul Pmags, and two metal 10-round magazines.