Ruger's AR-556 semi-automatic rifle is made from forged aerospace-grade 7075-T6 aluminum. The hard coat anodized, flattop upper receiver includes a forward assist, dust cover and brass deflector, while the handguards are made from heat-resistant glass-filled nylon. It has a carbine-length, milled gas block with multiple attachment points for a QD socket, bayonet lug, and sling. Serrations on the angled face of the gas block provides a low-glare surface. It also has a bolt machined from 9310 alloy steel, single-stage trigger, chrome-plated bolt carrier with a matte black oxide finish on the exterior, and patent-pending barrel nut and Delta ring for one person handguard removal and installation.
- Action: Semi-Auto
- Caliber: 5.56x45mm NATO
- Barrel Length: 16.10"
- Capacity: 10+1
- Trigger: Mil-Spec
- Safety: Safety Selector Switch
- OAL: 32.25"- 35.50"
- Weight: 6.70 lbs
- Stock Description: 6 Position Collapsible
- Metal Finish: Black Hardcoat Anodized
- Muzzle: A2 Flash Hider
- Receiver Material: 7075-T6 Aluminum
- Sights: Optic Ready
- Barrel Description: Cold Hammer Forged Steel
- Twist: 1:8"
- Barrel Length Range: 16" to 16.99"
- Weight Range: 6 lbs to 6.99 lbs
- Hand: Right
- Stock Finish Group: Black
- Metal Finish Group: Blued/Black
