Shorthand for SIG-Sauer, a German-based manufacturer of some of the finest tactical pistols and rifles on the market. The acronym stands for "Schweizerische Industrie Gesellschaft," German for "Swiss Industrial Company." SIG, a Swiss firm, partnered with JP Sauer & Sohn, a German company, to form SIG-Sauer and broaden the market for their firearms. SIG pistols are used by the US military, the Naval Criminal Investigative Service (NCIS), the US Secret Service, the US Department of Homeland Security, and law enforcement all over the US. SIG pistols are available in several different configurations and several popular chamberings, including 9mm, .45 ACP, .40 S&W, .357 SIG, and .380 ACP. SIG pistols have a well-deserved reputation as being extremely well-made and highly reliable.
Did you see the SIG .40 that cop was packing?