Variants of the Smith & Wesson Sigma are available in various models.
The Smith & Wesson Sigma can be said to be a reproduction of the more popular Glock 17. In order to compete with the Glock, the company designed the Sigma in the early 90s, which was eventually introduced to the market in 1994. Though similar in many ways, Sigma was quite more expensive than the Glock. The similarities between the two weapons were so apparent that Glock launched a lawsuit against Smith and Wesson, a case which was settled in 1997 when Smith & Wesson paid Glock undisclosed sum—mainly for a breach in patents. Still, despite Smith & Wesson retaining rights to keep on producing the Sigma, the Glock was still far more popular than the Sigma.
The Sigma 40F was this line’s first iteration, made to accommodate .40 S&W. The model was notable for being the first weapon to use ammunition of this type. The Sigma 9F (the F stands for Full-size) was then introduced, made to accommodate 9 x 19 mm Parabellum. The 9F series is supported by a magazine of double-stack type, which is capable of holding about 17 rounds. Other models were designed to accommodate both .357 SIG and .380 ACP ammunition. Within the company itself, the Sigma was also notable for being its first ever to be designed with synthetic materials. The frame was made out of polymer while both the slide and the barrel were of steel.
The gun is operated through the short-recoil mechanism. Its locking is of modified Browning style while its trigger is of single-action type. This trigger mechanism is dubbed “safe action” by the company. There are no manual safeties embedded in the weapon. The gun comes with iron sights fitted into its slide. The effective fire range of the sights is around 50 meter. The Sigma series underwent some changes to improve its performance in the form of shortened slide and barrel. The improvement was also implemented on its trigger and grip while an accessory rail was embedded under the barrel.
|Caliber||9×19 mm Parabellum|
|Weight (empty)||690 g|
|Barrel length||114 mm|
|Muzzle velocity||~ 360 m/s|
|Magazine capacity||17 rounds|
|Sighting range||~ 50 m|
|Range of effective fire||~ 50 m|