SG 550 — specifications, caliber, stats, review, photos | WeaponAtlas
SG 550 is a Swiss assault rifle chambered in 5.56×45mm NATO, introduced in 1986. It uses a long-stroke gas system with a rotating bolt and features a side-folding skeleton stock with translucent polymer magazines.
| Manufacturer | SIG Sauer |
|---|---|
| Year introduced | 1986 |
| Caliber | 5.56×45mm NATO |
| Weight (unloaded) | 4.100 kg |
| Length | 1000 mm |
| Barrel length | 528 mm |
| Magazine capacity | 20 rounds |