SIG Sauer P320 Pro Series X-Series Agency Allocation 9mm Full-Size Striker-Fired Pistol
This Pro Series P320 comes straight from SIG Sauer’s Law Enforcement allocation, built in the Agency Vault for police and government contracts and released to the civilian market only through limited aftermarket channels. It features an optics-ready Pro-Cut slide, modular serialized fire-control unit, and X-Series grip module—all in as-new condition with matching factory case dated April 29 2022. A scarce find for collectors and shooters who want a duty-grade P320 that is rarely seen outside agency inventories.
Condition
Overall Condition: As-new condition with no signs of prior handling beyond what’s typical from inspection.
Specific Condition Notes: The pistol appears to have been fired only for factory testing; no operational wear is visible on the slide, frame, or barrel.
Bore Condition: Excellent — clean, mirror finish, no signs of wear.
Bore Rifling: Excellent — sharp lands and grooves.
What’s Included
- SIG Sauer factory plastic hard case
- 3 × 17-round SIG Sauer steel magazines stamped “MADE IN ITALY”
- SIG Sauer cable lock (orange)
- Factory literature packet (owner’s manual and safety cards)
The Agency-only W-prefix SKU (W320F-9-BXR3-PRO-AEU) was produced in limited batches, making this full-size X-Series pistol both rare and collectible. The modular fire-control unit allows swift caliber or size conversions while retaining the serialized core.
The Pro-Cut stainless slide wears a matte black Nitron finish and comes milled for ROMEO2, ROMEO1T, and DeltaPoint Pro footprints, with front and rear serrations for confident manipulation. Factory-installed SIG XRAY3 tritium day/night sights offer a bright green front ring and blacked-out rear for rapid target acquisition.
An X-Series grip module provides an extended beavertail, high undercut trigger guard, and granulate-style texture for a secure hold. A flat-faced, skeletonized trigger delivers a consistent break, and ambidextrous slide-catch levers plus a deeply grooved takedown lever support intuitive handling for right- or left-handed users.
The 4.7-inch stainless barrel is rifled for accuracy, while an accessory rail on the dust cover accepts weapon lights or lasers. With a 17+1 capacity and striker-fired action, this P320 is ready for duty or range use right out of the box.