Sig Sauer P320X FCU 9mm

Updated August 24, 2026

This SIG Sauer P320 X-Series Fire Control Unit is associated with the company’s modular 9mm P320 handgun platform and presents in very good overall condition. Serial number 58A165484, this serialized assembly features the distinctive flat-faced X-Series trigger and represents the central fire-control component around which a complete P320 can be configured. No grip module, slide, barrel, sights, or magazine are included with the lot as described. The P320 platform was designed around modularity, and its removable serialized FCU allows compatible grip and upper assemblies to be changed while retaining the same serialized component. The X-Series trigger further distinguishes this unit from more basic P320 fire-control assemblies and gives it additional appeal to SIG enthusiasts. This component requires an FFL transfer. A clean and desirable starting point for the collector or buyer interested in the modular SIG Sauer P320 system. Please see photos. Sig Sauer P320X FCU 9mm Semi 58A165484 Very Good

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