Sig Sauer P320X Full 9mm

Updated August 24, 2026

This SIG Sauer P320 X-Full semi-automatic pistol is chambered in 9mm and comes outfitted with a SIG Sauer ROMEO red dot sight, making it an especially appealing modern handgun package. Serial number 58H309585, this example features an approximately 4.5" barrel with a shiny bore and remains in good overall condition. The pistol utilizes SIG Sauer’s X-Series polymer grip module and full-size frame paired with a steel slide, providing the performance-oriented ergonomics associated with the X-Full configuration. The mounted SIG Sauer ROMEO optic provides a quality electronic sighting solution. Three magazines are included along with the original SIG Sauer hard case, adding substantial value and completeness. The modular P320 has become one of SIG Sauer’s most important modern handgun platforms, while the X-Series adds upgraded ergonomics and styling. With three magazines, factory case, SIG optic, and full-size configuration, this is a well-equipped P320 package. Please see photos. Sig Sauer P320X Full 9mm Semi 4.5 Shiny 58H309585 Good

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