Switzerland. Canton Obwald. Lungern. Brünig Indoor. A young man is checking an automatic or semi-automatic assault rifle SG 550 in Brünig Indoor. The SG 550 is an assault rifle manufactured by Swiss Arms AG (formerly Schweizerische Industrie Gesellschaft) of Neuhausen, Switzerland. "SG" is an abbreviation for Sturmgewehr, or "assault rifle". The rifle is based on the earlier 5.56mm SG 540 and is also known as the Fass 90 or Stgw 90. An assault rifle is a selective-fire rifle that uses an intermediate cartridge and a detachable magazine. All weapons and handguns are for sale. 16.06.2016 © 2016 Didier Ruef