The SIG P220 is a semi-automatic pistol manufactured and designed by Swiss Arms AG in Switzerland (formerly known as SIG Arms AG (distributed in United States of America by SIGARMS).
The P220 also comes in P220ST and P220R versions. The base and R models have a stainless steel slide with an alloy frame (German versions use a stamped blued steel slide however US versions made by SIGARMS have the stainless steel slide with alloy frame. The SIG P220ST model has a stainless steel slide and frame. The R and ST models additionally have an accessory rail, beneath the barrel and slide, allowing for fitting of accessories such as laser aiming aids or tactical lights. The P220 was initially imported into the United States of America named as the Browning Double Action (BDA) and then eventually as the P220. The gun was offered for sale in 9 mm, .38 Super (extremely rare model), and .45 ACP.
The SIG P220 pistol was produced and developed to replace the SIG P210 in the Swiss Army, which had been produced and developed throughout World War II. The pistol is known as the Pistole Modell 75 in service or the (M75). During the development of the SIG P220, SIG joined forces with Germany's J.P. Sauer & Sohn and therefore the P220 was developed making all further pistols known as SIG-Sauer firearms. The SIG P220 uses a short recoil locked breech system first introduced by John Browning.
The SIG P220 was developed for the Swiss Army as a replacement for the SIG
Switzerland was the first country to formally adopt the SIG P220 in 1975 as the MOdel 75 (M75). the pistol is chambered in 9mm Luger. Japan and Denmark later adopted the pistol. The pistol was further succeeded by the SIG-Sauer P226.