Ruger AR-556 Standard 16" 5.56 NATO Semi-Auto Rifle – Cold Hammer Forged Barrel, Collapsible Stock
The Ruger AR-556 Standard (Model 8500) brings Ruger’s proven reliability to the AR-15 platform with a factory-built rifle that blends robust materials, smart design touches, and shooter-friendly features. Built in Mayodan, North Carolina, this 5.56 NATO carbine uses a cold hammer forged alloy-steel barrel, a Type III hard-coat anodized 7075-T6 aluminum receiver set, and a six-position M4-style stock. With its threaded muzzle, Ruger proprietary six-port flash suppressor, and co-witness iron sights, this rifle is ready for range use the moment it leaves the box.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling – Sharp lands and grooves.
What’s Included
- Ruger AR-556 Standard rifle (Model 8500)
- One 30-round Magpul PMAG polymer magazine
This AR-556 uses a 16.10" cold hammer forged barrel with a 1:8 RH twist, giving it the versatility to stabilize a wide range of bullet weights. The barrel is threaded 1/2-28 and capped with Ruger’s proprietary six-port flash suppressor for reduced muzzle flash.
The carbine-length gas system pairs with a low-profile gas block that includes a QD sling socket. Up front, an A2-style F-height front sight post offers a fixed reference point, while Ruger’s Rapid Deploy flip-up rear sight folds flat until needed and co-witnesses with most optics.
Both upper and lower receivers are machined from 7075-T6 aluminum and finished with Type III hard-coat anodizing for corrosion and wear resistance. Inside, the direct-impingement action runs on standard AR components, backed up by a chrome-plated bolt carrier and a staked gas key.
The six-position, collapsible M4-type stock and polymer pistol grip offer an adjustable length of pull and familiar ergonomics. A round, carbine-length polymer handguard keeps weight down while leaving the barrel free to float naturally under recoil.
Factory-fresh in 2021 and showing minimal use, this rifle provides a ready-to-run package for target shooting, training, or defensive roles—complete with a dependable Magpul PMAG and quality iron sights straight from Ruger.