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. The Stgw. 57 assault rifle was developed during the late …

The SIG AM55 is a prototype Swiss battle rifle. The AM55 was the first successful semi-automatic rifle design made by SIG. It borrowed heavily from other German World War II designs that …

The AM55 operated using a delayed-blowback system, similar to the one used in the MG42 Machinegun. The AM55 was originally equipped with a wood fore-arm and handguard, as well …

Dec 6, 2020 · Here, SIG AM 55 prototypes are demonstrated at the Walenstadt training grounds, showing off the various functionalities of the new assault rifle....more. This very interesting …

Dec 1, 1997 · Cutaway receiver display of SIG AM55 prototype battle rifle. Next was the actual test firing and computer sight-in of the assembled rifles. This is done in one of SIG’s …

Aug 7, 2019 · The AM55 that was designed during the early 1950s employed a half-lock or delayed-blowback operating system. With similarities to the HK G3, the system used a …

Oct 28, 2010 · The story of the new Sig Sauer 556 starts with the AM55, the last in a series of weapons to come from experimentation that began in 1908 focusing on the …

Mar 15, 1999 · The SG 510 (also known as the AM 55 and StGw 57) Is provided with a geared-up, de layed blowback locking system that utilizes twin bolthead pivoting cylinders, along the …

Mar 25, 2025 · In 1957, the Swiss military announced the adoption of the SIG AM55 and named it "STGW 57". This well-fired rifle remained in service until the late 1980s, when it was replaced …

Nov 8, 2015 · With a loaded weight going well over 13 pounds, this 1950s battle rifle was the go-to arm of the Swiss Army for decades and is a much sought after collectible here in the states. …