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Smith & Wesson Sigma

Semi-automatic pistol

S&W Sigma

The Sigma was the first pistol produced by Smith & Wesson to use synthetic materials in construction

 
 
Caliber 9x19 mm Parabellum
Weight (empty) 690 g
Length 184 mm
Barrel length 114 mm
Muzzle velocity ~ 360 m/s
Magazine capacity 17 rounds
Sighting range ~ 50 m
Range of effective fire ~ 50 m

 

   The Smith & Wesson Sigma is a clone of the popular Glock 17. It was designed in the early 1990s to compete with the Glock series pistols. The Sigma was introduced in 1994. It was priced slightly above the Glock 17. The Sigma bears so much similarity with the Glock, that a lawsuit was raised against Smith & Wesson company. The case was settled in 1997. Smith & Wesson paid undisclosed sum to Glock company for violation of the patents. However the Smith & Wesson company received the rights to continue production of this pistol. However the Sigma was not as popular as the Glock.

   The first production model, the Sigma 40F, is chambered for .40 S&W ammunition. It was one of the first pistols to use this ammunition. Later a Sigma 9F, chambered in 9x19 mm Parabellum ammunition, was introduced. The letter "F" in the designation denotes a full-size model. Also there are models chambered in .357 SIG and .380 ACP ammunition.

   The Sigma was the first pistol produced by Smith & Wesson to use synthetic materials in gun construction. Its frame is made of polymer. The slide and barrel are made of steel.

   The Sigma is a short-recoil operated weapon. It uses a modified Browning-style locking. The pistol has a single-action type trigger. It is referred as "safe action" by the manufacturer. This pistol has no manual safeties.

   The 9 mm Sigma 9F is fed from a double-stack magazine, that holds 17 rounds.

   The pistol has simple iron sights dovetailed into the slide. Range of effective fire is about 50 meters.

   In 1999 the Sigma series pistols have been improved. The barrel and slide were slightly shortened. Grip and trigger were improved. Accessory rail was added under the barrel. Pistols produced since 1999 onwards are considered as "2nd generation". However model numbers were not changed to reflect the updates.

   In 2011 design of the Sigma was reworked. Smith & Wesson company dropped the Sigma name and the new pistol was introduced as "Self-Defense" or SD series.

Magazines are interchangeable between Sigma and SD series pistols.

   There are numerous versions of the Sigma.

 

 
S&W Sigma

S&W Sigma

S&W Sigma

S&W Sigma

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