SIG SG 510
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The Sturmgewehr 57 is a selective fire battle rifle designed by Schweizerische Industrie Gesellschaft of Switzerland. The Stgw. 57 assault rifle uses a roller-delayed blowback system similar to the blowback system of the Heckler & Koch G3 and CETME rifles.
As an assault rifle, the model AM 55 entered service in the Swiss Army in three designations F. ass. 57 7.5mm and 7.5mm Stgw. 57. Technologically, the Stgw. 57 was the mechanical and design basis for the export-variations of the SG 510 family of small arms. After thirty-three years, from 1957 to 1990, the Swiss Army replaced the Stgw. 57 with the SIG SG 550, a lighter-weight assault rifle.
Sturmgewehr 57 (Stgw. 57)
Swiss bicycle infantry armed with the Stgw 57 in 1975.
Stgw 57 with folded down iron sights on its bipod set in the rear position.
Stgw. 57 roller-delayed locking system
SIG Group
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SIG Group AG is a Swiss multinational corporation in the packaging industry.
SIG buildings in Neuhausen am Rheinfall (Switzerland)
SBB RABDe 500
SIG-built CLRV L1 4004 in Toronto
SBB RAm TEE I train set in ONR Northlander service