SIG Sauer P320 XSeries XFull XPRO 9mm — Agency Vault Law-Enforcement Allocation, Optic-Ready, 4.7" Barrel, 17+1
This scarce XSeries XFull XPRO comes from SIG Sauer’s Agency Vault program, originally reserved for police and government contracts and released only in limited surplus to the civilian market. It combines the modular P320 fire-control unit with a PRO-cut, optic-ready slide, flat XSeries trigger, and night sights, delivering a full-size 17-round platform that is hard to find outside agency channels.
Condition
Overall Condition: As-new condition with no signs of prior handling beyond what’s typical from inspection.
Specific Condition Notes: The pistol shows only light factory test firing and remains essentially unused.
Bore Condition: Excellent — clean, mirror finish, no signs of wear.
Bore Rifling: Excellent — sharp lands and grooves.
What’s Included
- SIG Sauer gray injection-molded pistol case
- Three 17-round SIG Sauer steel magazines with SIG-logo baseplates
- Orange cable lock
The XPRO variant features SIG’s PRO-cut slide with front and rear serrations and a factory optic cut compatible with the Romeo1 PRO footprint, allowing easy mounting without additional milling.
A flat-faced XSeries trigger, extended beavertail grip module, and reversible magazine release give shooters enhanced control and ergonomics while retaining the P320’s fully modular fire-control unit for effortless caliber or size conversions.
The stainless-steel 4.7" barrel, Nitron-finished slide, and polymer frame deliver durability and corrosion resistance, backed by tritium night sights—a green front dot and twin-vial rear—for 24-hour target acquisition.
Produced in the USA as part of a law-enforcement allocation, this pistol’s limited Agency Vault provenance makes it far less common than standard commercial XFull models, appealing to shooters and collectors who value rarity alongside performance.