SIG Sauer P320 Professional Full-Size X-Series 9mm Luger Semi-Auto Pistol | 17+1, Optic-Cut Slide, XRAY3 Sights
This Professional-series P320 comes straight from SIG Sauer’s Law Enforcement allocation, built in the Agency Vault for police and government contracts yet seldom available on the commercial market. Its modular fire-control unit, optic-ready X-Series slide, and duty-length grip unite to deliver a full-size duty pistol packaged in near-factory-new condition.
Condition
Overall Condition: As-new condition with no signs of prior handling beyond what’s typical from inspection.
Bore Condition: Excellent – clean, mirror finish, no signs of wear.
Bore Rifling: Excellent – sharp lands and grooves.
Specific Condition Notes: The pistol appears to have only the minimal rounds fired during factory testing and shows virtually no exterior or internal wear.
What’s Included
- SIG Sauer factory hard polymer pistol case
- Three 17-round factory SIG Sauer steel magazines
- Orange polymer chamber safety flag
Developed for agencies that demand uncompromising duty performance, the Professional Full-Size P320 pairs a 4.7-inch carbon-steel barrel with SIG’s X-Series grip module. The grip features an extended beavertail, aggressive backstrap contour, and a high under-cut trigger guard that promotes a consistent, high grip for faster recoil recovery.
The slide wears a durable Black Nitron finish and sports both forward and rear serrations for confident manipulation. A factory PRO-footprint optic cut accepts SIG ROMEO2, ROMEO1 PRO, and Leupold DeltaPoint PRO red-dots without adapter plates, letting shooters mount preferred optics directly to the slide.
Inside, a flat-faced, skeletonized trigger works with the striker-fired action to deliver a crisp, repeatable break. Because the serialized stainless-steel fire-control unit (FCU) is the legal firearm, owners can swap calibers, barrel lengths, and grip sizes without an FFL transfer, making this pistol a flexible foundation for multiple configurations.
A four-slot MIL-STD-1913 rail on the full-length dust cover accommodates weapon lights or lasers, while factory SIG XRAY3 day/night sights provide a bright green tritium front ring and two tritium rear dots for 24-hour visibility.
Serial prefix 58H places production in 2023–2024 at SIG Sauer’s U.S. facility, and the commercial part number W320F-9-BXR3-PRO confirms the Professional Full-Size configuration originally restricted to law-enforcement distribution.