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About Product
Full-length gas piston operating rod system. Standard two-position adjustable gas valve. Rotating bolt. Accepts all standard AR magazines. 5.56 x 45mm NATO. Cold hammer forged barrel in 254 mm or 406 mm. Select fire (single shot, 3-round burst, full auto), Semi-automatic only versions available. Standard Rotary Diopter Rear and Hooded Front. Sights, Mini Red Dot Sight optional. Alloy M1913 standard quad rail forearm. Folding/length adjustable Swiss-type stock.
| Model: | SIG556 Classic |
|---|---|
| Manufacturer: | Sig Sauer |
| Item #: | R556-10B-C-RD |
| Action | Automatic |
| Rate of fire: | 650 - 800 |
| Caliber: | 223 Remington (5.56×45mm NATO) |
| Barrel length: | 10" |
| Barrel finish: | Black |
| Barrel type: | Round |
| Grooves: | 6 |
| Rate of twist: | 1 in 7" |
| Stock type: | Folding |
| Stock material: | Polymer |
| Stock finish: | Black |
| Butt: | Rubber |
| Overall length: | 21.1 - 30.1" |
| Sights: | Hooded |
| Standard Rotary Diopter | |
| Trigger: | Mil Spec |
| Trigger pull: | 7.5 lbs. |
| Magazine capacity: | 30 |
| Magazine type: | AR Detachable box |
| Weight: | 7.1 lbs. |
