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SIG Sauer P320
The SIG Sauer P320 is a modular striker-fired semi-automatic pistol made by SIG Sauer, Inc., SIG Sauer's American branch. It marked Sig Sauer's first foray into striker-fired pistols, as their first offering on the commercial market.
The P320 has faced scrutiny over reports of unintentional discharges and safety issues, leading to over 100 lawsuits against SIG Sauer, and its withdrawal from use by several law enforcement agencies, as well as being banned from use in IDPA-sanctioned competitions and numerous ranges and training courses.
The P320 chambered in 9×19mm Parabellum was introduced in the North American market on 15 January 2014, followed by the .45 ACP compact model at the SHOT Show in January 2015.
On 19 January 2017, it was announced that a customized version of the SIG Sauer P320 had won the United States Army's XM17 Modular Handgun System competition.
The full-sized model is known as the M17, and the compact carry-sized model is known as the M18.
In December 2025, the SIG Sauer P320 replaced the SIG P220 as the Swiss Army's new service pistol.
According to The Washington Post, the P320 is one of the most popular handguns in the United States.
The P320 is a further development of the SIG Sauer P250, utilizing a striker-fired mechanism in lieu of a double action only hammer system. SIG lists the trigger pull of the standard P320 at 29 N (6.5 lbf). The P320 trigger pull is accomplished by a combination of a tensioned striker spring, ideal trigger shoe and trigger bar dimensions, sear/striker engagement, and a balanced trigger system.
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SIG Sauer P320
The SIG Sauer P320 is a modular striker-fired semi-automatic pistol made by SIG Sauer, Inc., SIG Sauer's American branch. It marked Sig Sauer's first foray into striker-fired pistols, as their first offering on the commercial market.
The P320 has faced scrutiny over reports of unintentional discharges and safety issues, leading to over 100 lawsuits against SIG Sauer, and its withdrawal from use by several law enforcement agencies, as well as being banned from use in IDPA-sanctioned competitions and numerous ranges and training courses.
The P320 chambered in 9×19mm Parabellum was introduced in the North American market on 15 January 2014, followed by the .45 ACP compact model at the SHOT Show in January 2015.
On 19 January 2017, it was announced that a customized version of the SIG Sauer P320 had won the United States Army's XM17 Modular Handgun System competition.
The full-sized model is known as the M17, and the compact carry-sized model is known as the M18.
In December 2025, the SIG Sauer P320 replaced the SIG P220 as the Swiss Army's new service pistol.
According to The Washington Post, the P320 is one of the most popular handguns in the United States.
The P320 is a further development of the SIG Sauer P250, utilizing a striker-fired mechanism in lieu of a double action only hammer system. SIG lists the trigger pull of the standard P320 at 29 N (6.5 lbf). The P320 trigger pull is accomplished by a combination of a tensioned striker spring, ideal trigger shoe and trigger bar dimensions, sear/striker engagement, and a balanced trigger system.