Ruger AR-556 MFG# 8500 | 5.56 NATO | 16.1″ Barrel

The Ruger AR-556 (MFG# 8500) is a semi-automatic modern sporting rifle chambered in .223 Rem / 5.56 NATO with a 16.1″ cold hammer-forged barrel and a six-position collapsible synthetic stock. It is built on 7075-T6 aluminum forgings with a Type III hard coat anodized finish and includes a Magpul 30-round PMAG. For a budget-friendly optic under $1,000 that pairs well with this platform, consider a Vortex Strike Eagle 1-6×24 or a similar 1-6x riflescope for close-to-medium range work.

This rifle is well suited to modern sporting rifle use such as recreational range/practical shooting and MSR-style competition. It features an A2-style, elevation-adjustable front sight and a Ruger Rapid Deploy folding rear sight for a reliable iron-sight option.

Product Specifications

• The UPC is 736676085002.
• Chambering is .223 Rem / 5.56 NATO.
• The barrel measures 16.1 inches and uses a 1/2″-28 thread pattern.
• The rate of twist is 1:8″ RH.
• The barrel is a cold hammer-forged alloy with a medium contour.
• The rifle includes 1 x 30-round Magpul PMAG as the supplied magazine.
• The unloaded weight is 6.5 pounds.
• Upper and lower are forged from 7075-T6 aluminum with a Type III hard coat anodized finish.
• The bolt is made from 9310 steel and the bolt carrier is 8620 steel.
• The stock is a black 6-position collapsible synthetic design.
• Sight options include an A2-style adjustable front post and a Ruger Rapid Deploy folding rear sight.
• The trigger is a single-stage design.

This Ruger AR-556 offers a durable, entry-friendly modern sporting rifle package with serviceable materials and a familiar controls layout. The combination of a cold hammer-forged 16.1″ barrel, 7075-T6 receivers, and included Magpul PMAG makes it a practical choice for shooters who want a ready-to-use AR platform for range work and MSR-style events. Its adjustable sights and threaded muzzle simplify adding optics and accessories to suit a range of shooting applications.

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