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RUGER SR 556 223/5.56

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Description: FS. The Ruger SR 556 is a top-rated piston-operated AR15 in 223/5.56 caliber. This is a pre-owned rifle in excellent condition. You could purchase an entry-level rifle for less money, and for plinking, it would probably be a good choice, but if your life depended on it functioning correctly when you needed it to the little extra money that was spent on a higher quality AR might be justified.


The SR-556 is an AR-15 style semi-automatic rifle manufactured by U.S. firearms company Sturm, Ruger & Co. The rifle was introduced in 2009 in 223 Remington/5.56×45mm NATO and as a .308 Winchester AR-10 variant in 2013, the SR-762. It is one of several 21st-century AR-15 rifles to use gas piston operation (SR-556).

Ruger's introduction of the SR-556 was met with some criticism for its high price tag of around US$2,000. Ruger products are usually known for affordability, but the SR-556 is essentially a regular AR-15 albeit with a different, more complicated operating system, unlike cheaper alternatives, like the Smith & Wesson M&P Sport and Sport II model rifles, of which the original Sport model lacked a forward assist and dust cover.

The SR-556 offers Ruger's legendary rugged reliability, redefining the AR platform with piston-driven performance. The piston-driven SR-556 runs cleaner, cooler, and is easier to maintain than gas-driven rifles, offering significantly improved reliability.

The patent-pending two-stage piston-driven operating system in the Ruger SR-556 provides a smooth 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, minimizing recoil and maximizing reliability and long-term endurance. Reliability is further enhanced by a one-piece bolt carrier with an integral transfer key.

Designed for long-lasting accuracy, the heavy contour, 16-1/8" chrome-lined barrel is cold hammer-forged from Mil-Spec 41V45 Chrome-Moly-Vanadium Steel. The barrel has a 1:9 twist rate and is capped with an AC-556 flash suppressor. Chambered in 5.56mm NATO, the Ruger SR-556 also fires .223 Rem. ammunition.

The Ruger SR-556 is equipped with a six-position telescoping M4-style buttstock that houses a Mil-Spec buffer and spring. A Hogue® Monogrip® pistol grip and three Troy Industries Rail Covers provide a comfortable ergonomic hold when carrying or shooting.

Durability and performance of the SR-556 are enhanced with the use of high-performance finishes: 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 flat-top upper receiver and barrel assembly are 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.


Ruger SR-556 - Standard Configuration (discontinued) Type AR-15 style semi-automatic rifle Place of origin United States Production history Designed 2009 Manufacturer Sturm, Ruger & Co. Produced 2009–2018 Specifications (Standard) Mass 3.60 kg (7.94 lb) Length 832 mm (32.75 in) (collapsed) 910 mm (36 in) (extended) Barrel length 409 mm (16.12 in) Width 64 mm (2.5 in) Height 197 mm (7.75 in) Cartridge 5.56×45mm NATO/.223 Barrels 1:410 mm (16 in) Action Gas-operated short-stroke piston, rotating bolt Feed system STANAG magazine

Condition: Used - See Item Description
Caliber: .223 Remington (5.56 NATO)
Location: SC

Trades Accepted: No



Item #: 930077549
SKU: SR 556
Stock No.: 590-41869
Seller Since: Feb. 2015
Identity Verified ( Lexington, SC )
Trusted Seller
This seller is an FFL
City: Lexington
State: SC

This Seller Accepts Online Payment

Shipping: See Description (or Arrange local transfer)
Accepted Payment Methods: Visa MasterCard Discover American Express
Returns: No Returns

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