AR-556 — specifications, caliber, stats, review, photos | WeaponAtlas
The AR-556 is a semi-automatic rifle in 5.56x45mm NATO / .223 Remington introduced in 2014. It is a civilian AR-15-pattern model with direct-impingement gas operation, a rotating bolt, a 409 mm barrel, and a telescoping stock.
| Manufacturer | Sturm, Ruger & Co. |
|---|---|
| Year introduced | 2014 |
| Caliber | 5.56×45mm NATO, .223 Remington |
| Weight (unloaded) | 2.900 kg |
| Length | 819 mm |
| Barrel length | 409 mm |
| Magazine capacity | 30 rounds |