Schweizerische Industrie Gesellschaft
Schweizerische Industrie Gesellschaft (SIG) is a Swiss company, now known as Swiss Arms. In 1975, SIG entered into an agreement with German gun manufacturer J.P. Sauer &amp; Sohn to develop and market a new handgun which became the P220. The P220 was the first SIG Sauer handgun sold in the US. It was marketed initially by Browning as the Browning BDA. The SIG Sauer P220 is a refinement of the Petter-Browning design used in the SIG P210. The locked breech design is very different and was pioneered by SIG Sauer. See also The first SIG Sauer Handgun.