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.
| Barrel Description |
Chrome Moly Steel |
| FireArm |
yes |
| Weight |
6.40 lbs |
| Trigger |
Single-Stage |
| Sights |
Picatinny Rail |
| Metal Finish |
Black Hardcoat Anodized |
| Action |
Semi-Auto |
| Receiver Material |
7075-T6 Aluminum |
| Weight Range |
6 lbs to 6.99 lbs |
| Hand |
Right Hand |
| Stock Finish Group |
Black |
| Metal Finish Group |
Blued/Black |
| Twist |
1:7" |
| Barrel Length Range |
16" to 16.99" |
| Barrel Length |
16.10" |
| Capacity |
30+1 |
| Stock Description |
6 Position |
| Caliber |
300 Blackout |
| OAL |
33"- 36.25" |
