The SG 550 is a selective-fire 5.56×45mm NATO assault rifle firing from a closed bolt. It has a gas-actuated piston-driven long-stroke operating system derived from the SIG SG 540 series of rifles, which uses burnt powder gases vented through a port in …

Adopted by the Swiss Army in 1984, the SG 550 was redesigned as the Stg.90 (Sturmgewehre 90.) An initial order for 600,000 Stg.90s was made, and the first deliveries began in 1986. Stg.90 Bolt & Carrier

Jul 7, 2022 · The full-sized SIG SG 550 serves as the main rifle of the Swiss Armed forces, but is not the only model. Special units use the SG 553, a.k.a. the Sturmgeweher 07. This shorter carbine features a 13.7-inch barrel.

Jan 28, 2024 · The current standard issue Swiss military rifle is the SIG SG 550 (Sturmgewehr 90, or Assault Rifle 90). A select-fire assault rifle chambered in 5.56x45mm NATO , it has been the primary service rifle of the Swiss Armed Forces since …

May 5, 1999 · In February 1983, the Swiss Federal Council made public its decision that the new 5.6mm SIG SG541 assault rifle (renamed the SG550 at the end of October 1984) would be adopted as the standard service weapon of the Swiss Army.

Aug 10, 2023 · The SIG SG 550 (Sturmgewehr Model 550) series was born in a Swiss Army initiative requiring an automatic weapon chambered for the 5.56x45mm NATO cartridge as a replacement for its 1950s-era SIG SG 510 Battle Rifle. Development of the new system began in 1979 and spanned into 1980.

May 5, 1999 · Enter the SIG SG 550-1 Sniper. Manufactured in Switzerland by Schweizerische Industrie Gesellschaft (SIG), this semiautomatic rifle chambered in .223 Remington caliber (5.56 X 45mm) more than lives up to its name.

The SG 550 is a selective fire 5.56×45mm NATO assault rifle firing from a closed bolt. It has a gas-actuated piston-driven long stroke operating system derived from the SIG SG 540 series of rifles, which uses burnt powder gases vented through a port in …

These new SIG assault rifles are available in two versions: the standard model SG 550 and the SG 551 short pattern. As such, they effectively form a weapon family, sharing a majority of common components. Consequently, handling, training and maintenance are …

The SIG SG 550 (SturmGewehr) is a Swiss assault rifle designed by Jürgen Baumann[1] and Ennio Mattarelli around 1978 and produced by Schweizerische Industrie-Gesellschaft since 1986; production of the rifle is currently handled by SIG Sauer AG (formerly SAN Swiss Arms AG) with the privatization...