Sig Sauer 40SW Pistols

The SIG Pro is a series of semi-automatic pistols designed and manufactured by Swiss Arms AG (formerly SIG Arms AG and Sauer & Sohn) and distributed in United States by the SIGARMS. It was the first polymer-framed handgun from either company. It is available in several variants (SP 2009, SP 2022 and SP 2340) and chambered in .40 S&W, 9 mm Parabellum and .357 SIG.

The SIG Pro series of pistols is a joint effort between two famous European arms makers; SIG Arms AG (now Swiss Arms AG) and J. P. Sauer & Sohn of Germany. As with other joint ventures between the two companies these pistols are sometimes referred to as SIG Sauer. It was originally developed as a .40 S&W caliber service pistol with a polymer frame and modular design and was first announced in 1998 as the SIG Pro SP 2340. About one year later, the 9mm version, designated the SP 2009, was introduced and entered production.

The SIG Pro is a short recoil operated, locked breech pistol. It uses a traditional Browning cam-operated locking system. The barrel locks into the slide via enlarged ejection port.

The frame is made from polymer, with detachable grip panels. Grip panels can be easily replaced and are available in several different sizes and shapes.

The overall design is slightly different from earlier SIG-Sauer pistols such as P220 or P226, as there is no separate disassembly lever on the frame and the slide release lever looks quite different.

The standard SIG Pro does not have a manual safety but it does incorporate a decocking lever (lowers the hammer without striking the firing pin), trigger-bar disconnect (disconnects the trigger when the slide is out of battery), automatic firing pin lock (does not free the firing pin until the trigger is depressed) and a hammer safety intercept notch (prevents the hammer from striking the rear of the firing pin until the trigger is depressed).

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