
The SIG P210 is a locked breech self loading, semi-automatic pistol designed and manufactured in Neuhausen am Rheinfall by SIG from 1948 to 2006.

The SIG Pro is a series of semi-automatic pistols developed by SIG Sauer in Exeter, New Hampshire. It became the first polymer-frame handgun from SIG Sauer and one of the first pistols to feature a built-in universal accessory rail and interchangeable grips. Offerings in the series are chambered in .40 S&W, .357 SIG, or 9×19mm Parabellum. As of March 2020, only the SP 2022 variant is still listed on the SIG Sauer website. The SIG Pro was marketed as a lightweight and compact alternative to the "legacy" SIG Sauer handguns in an increasingly competitive and budget-oriented law enforcement market.

SIG Sauer of Newington, NH United States manufactures a full line of 1911 styled handguns. The earliest models were very faithful to the John M. Browning designed Colt M1911 Pistol which became the United States standard sidearm and served in that capacity for some seven decades before being replaced by the Beretta M9 handgun.

The SIG Sauer M17 and M18 are service pistols used by the United States Armed Forces. On January 19, 2017, the United States Army announced that a customized version of the SIG Sauer P320 had won the Army's XM17 Modular Handgun System competition. The full-sized model is known as the M17, and the smaller-sized carry model is known as the M18. The guns have subsequently been adopted by the United States Army, Navy, Marine Corps, Air Force, and Space Force. It replaces the Beretta M9, as well as several other handguns across the services. There are 2 color variants, coyote brown and black, for both the M17 and M18, though the vast majority have been produced in brown.

The SIG Sauer Mosquito is a blowback-operated, semi-automatic pistol aesthetically based on the SIG Sauer P226, but 10% smaller in size and chambered for the .22 LR cartridge. The pistol is manufactured with an aluminum-zinc alloy slide and polymer frame. The controls are similar to those present on full-size models and include a left takedown lever, a left decocking lever, reversible magazine catch and ambidextrous manual safety. In addition, the pistol is provided with an integral safety lock located at the rear of the magazine well which when enabled prevents cycling of slide, hammer fall, and trigger action. The pistol is available in five different configurations: Standard model, Sport, Threaded barrel, Two-tone, Reversed two-tone, and four special editions having different colors.

The SIG Sauer P220 is a semi-automatic pistol. Designed in 1975 by the SIG Arms AG division of Schweizerische Industrie Gesellschaft, and produced by J. P. Sauer & Sohn, in Eckernförde; it is currently manufactured by both SIG Sauer companies: SIG Sauer GMBH, of Eckernförde, Germany; and SIG Sauer, Inc., of New Hampshire, United States.
The SIG Sauer P226 is a full-sized, service-type pistol made by SIG Sauer. This model is sold with a choice of four chambers to choose from: the 9×19mm Parabellum, .40 S&W, .357 SIG, or .22 Long Rifle. It has essentially the same basic design as the SIG Sauer P220, but is developed to use higher capacity, double stack magazines in place of the single stack magazines of the P220.

The SIG Sauer P227 is an American-designed and produced semi-automatic pistol which was introduced in 2013 and discontinued in 2019. The P227 introduced a double-stack .45 ACP caliber handgun into the SIG Sauer lineup. It was introduced along with the P224.

The SIG Sauer P230 is a small, semi-automatic handgun chambered in .32 ACP or .380 Auto. It was designed by SIG Sauer of Eckernförde, Germany. It was imported into the United States by SIGARMS in 1985. In 1996 it was replaced by the model P232.

The SIG Sauer P238 is a compact .380 ACP caliber, single-action pistol announced by SIG Sauer at the 2009 SHOT Show. It is modelled after the M1911, similar to the Colt Mustang. Grip panels are fluted polymer making this an all-metal frame firearm in competition with plastic-framed pistols in the same class like the Ruger LCP and the Kel-Tec P-3AT.
The SIG Sauer P239 is a semi-automatic pistol designed and manufactured by SIG Sauer—both SIG Sauer GmbH in Germany and SIG Sauer Inc. of New Hampshire, United States. It was produced from 1996 to 2018, and offered in three calibers: 9×19mm Parabellum, .357 SIG and .40 S&W. The P239 became popular in the United States as a concealed carry pistol.

The SIG Sauer P250 is a semi-automatic pistol made by Sigarms. Introduced in 2007, the hammer-fired P250 can be chambered in .22 Long Rifle, .380 ACP, 9×19mm Parabellum (9mm), .357 SIG, .40 S&W, and .45 ACP. The P250 chambered in 9mm was introduced to the North American market on November 7, 2007, followed by the .45 ACP compact model in February 2008 at the SHOT Show. The last of the models was introduced in late 2009.

The Sig Sauer P290 is a polymer frame subcompact handgun that was produced from 2011 to 2017 by SIG Sauer of Exeter, New Hampshire. It was replaced by the SIG Sauer P365.

The SIG Sauer P320 is a modular semi-automatic pistol made by SIG Sauer, Inc. of Exeter, New Hampshire, and SIG Sauer GmbH of Eckernförde, Germany. It is a further development of the SIG Sauer P250, utilizing a striker-fired mechanism in lieu of a double action only hammer system. The P320 can be chambered in 9×19mm Parabellum, .357 SIG, .40 S&W, and .45 ACP, and can be easily converted from one caliber to another—a change from .357 SIG to .40 S&W requires only a barrel change; a change between 9mm to .357 SIG or .40 S&W and vice versa are accomplished using a caliber exchange kit.

The SIG Sauer P365 High-Capacity Micro-Compact is a polymer frame striker-fired semi-automatic pistol manufactured by SIG Sauer intended for everyday carry. It is chambered in 9×19mm Parabellum and is rated for +P ammunition while utilizing offset double-stack magazines. It is offered with Tritium XRAY3 Day/Night Sights and two 10-round magazines; one flush fit and the other with an extended finger tab. The P365, which replaced the P290RS, is produced in Newington, New Hampshire. In both 2018 and 2019, it was the best selling handgun in the United States.

The SIG Sauer P938 is a subcompact single-action pistol chambered for the 9×19mm Parabellum cartridge, manufactured by SIG Sauer and introduced at the 2011 SHOT Show. A variant chambered for .22 Long Rifle was introduced in 2014.