The SIG Pro is a series of semi-automatic pistols developed and manufactured jointly by Schweizerische Industrie Gesellschaft

Schweizerische Industrie Gesellschaft

Schweizerische Industrie Gesellschaft , or SIG, is the former name of SIG Holding AG, a Swiss company that has been active in various businesses during its more than 150 years of operation. Since the year 2000 the Society has undergone strategic refocus, concentrating on its core compentence in...

 (SIG) and J. P. Sauer & Sohn

Sauer & Sohn

J. P. Sauer und Sohn GmbH is a German manufacturer of firearms. Founded in 1751 in Suhl, Thuringia, Sauer & Sohn is the oldest firearms manufacturer still active in Germany. The company's production remained there for two centuries, before relocating to Eckernförde in 1951...

. It was the first polymer

Polymer

A polymer is a large molecule composed of repeating structural units. These subunits are typically connected by covalent chemical bonds...

-frame handgun from either company and one of the first pistols to feature a built-in universal accessory rail and interchangeable grips.

The SIG Pro was marketed as a lightweight and compact alternative to the "legacy" SIG-Sauer handguns in an increasingly competitive and budget-oriented law enforcement market.