Sig Sauer P320 Full Size 9mm

Updated August 24, 2026

This SIG Sauer P320 Full Size semi-automatic pistol is chambered in 9mm and is being offered as a repair or project firearm due to a known trigger-related issue. Serial number 58A149499, this example features an approximately 4.5" barrel with a shiny bore and is otherwise rated in good cosmetic condition. The pistol features SIG Sauer’s polymer grip module paired with a steel slide and the modular fire-control system that distinguishes the P320 family. No magazine is included. The trigger has issues and the firearm currently needs work to operate properly. It should be considered non-operational and should be professionally inspected and repaired before attempting to fire it. The P320 has become one of SIG Sauer’s most significant modern handgun platforms, with its modular design allowing numerous grip, barrel, and slide configurations. This full-size example presents an opportunity for the knowledgeable buyer or gunsmith looking for a P320 project. Please see photos. Sig Sauer P320 Full Size 9mm Semi 4.5 Shiny 58A149499 Good

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