The SIG SG 552 is the ultra-compact commando variant of the SG 550 family, fitted with an 8.9-inch barrel. Developed for special operations, close protection, and vehicle crew use where extreme compactness is critical. Swiss special operations units and foreign buyers adopted the SG 552 for close-quarters roles. Type: Rifle Action: Semi/Full-Auto Caliber: 5.56x45mm Capacity: 20 Year introduced: 1998, Switzerland Weight: 89.6 oz Overall length: 22.4" Status: Active Military use: Yes Intended use: military, special_operations, law_enforcement