Physical
The physical qualities of the SIG SG 550 (Sturmgewehr Model 550) / Stgw 90. Information presented is strictly for general reference and should not be misconstrued as useful for hardware restoration or operation.
998 mm
39.29 in
O/A Length
528 mm
20.79 in
Barrel Length
9.04 lb
4.10 kg
Weight
Gas-Operated; Rotating Bolt
Action
5.56x45mm NATO
Caliber(s)
5-, 20- or 30-round detachable box magazine
Feed
Iron Front and Rear; Optional Optics
Sights