Ruger SR-556 5.56mm NATO Autoloading Rifle (LE)

The SR-556® offers Rugers legendary rugged reliability, and comes factory standard with a host of accessories that todays shooters demand. Employing a patent-pending, chrome-plated, two-stage piston driven operating system that provides the user with a cleaner, cooler running, reliable firearm that is truly state-of-the-art.

The chrome-lined gas block and chrome-plated piston and regulator work together to provide a smooth power delivery stroke to the bolt carrier. The by-products of the gas system are vented out the bottom of the gas block, away from the bolt carrier, keeping the action clean and free from contaminants. The end result is significantly improved performance over gas driven rifles.

• Two-Stage Piston
• Gas Piston and Regulator: Adjustable, Four-Position Chrome-Plated
• Handguard: Quad Rail with Rail Covers
• Sights: Folding Iron Sights
• Buttstock: 6-Position, Telescoping M4-Style
• Cold Hammer-forged, Chrome-lined Mil-Spec 41V45 Barrel
• Removable Flash Suppressor
• Hogue Monogrip Pistol Grip
• Magazines: Three MAGPUL 30-Round PMAGs
• Chrome-plated bolt, and one-piece bolt carrier and extractor
• Soft-Sided Case

Two-Stage Piston with Adjustable Regulator

Provides a cleaner, cooler running, reliable firearm with superior operating endurance. The two-stage piston provides a smooth power delivery stroke to the bolt carrier. The four position gas regulator can be adjusted for optimum reliability and superior operating endurance. The gas system may be closed completely for manual operation during training or when using a suppressor.

Folding Back-Up Iron Sights (BUIS)

Provides a windage adjustable rear sight and an elevation adjustable front sight. These sights provide a solid, reliable aiming system that can be folded out of the way to make room for optics, but can be instantly redeployed if needed.