9x19 mm Parabellum
~ 360 m/s
~ 50 m
Range of effective fire
~ 50 m
The Smith &
Wesson Sigma is a clone of the popular
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.
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
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
The 9 mm
Sigma 9F is fed from a double-stack magazine, that holds 17 rounds.
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.
design of the Sigma was reworked. Smith & Wesson company dropped the
Sigma name and the new pistol was introduced as "Self-Defense" or SD
interchangeable between Sigma and SD series pistols.
numerous versions of the Sigma.