SIG Sauer P320 X-Series Pro Full-Size 9mm Luger — Agency-Vault Law Enforcement Allocation, Optic-Ready Slide, 17+1 Rounds
This Agency-Vault P320 X-Series Pro is a law-enforcement allocation pistol rarely released to the civilian market. Built around SIG’s modular stainless-steel fire-control unit, it pairs full-size shootability with a factory flat trigger, XRAY3 tritium sights, and a PRO-footprint slide cut that accepts ROMEO2/ROMEO1Pro and Leupold DeltaPoint Pro optics. Its as-new condition and three factory 17-round magazines make it an attractive choice for collectors and serious shooters alike.
Condition
Overall Condition: As-new condition with no signs of prior handling beyond what’s typical from inspection.
Bore Condition: Excellent — clean, mirror finish, with sharp lands and grooves.
Specific Condition Notes: The pistol appears unused beyond the factory test firing.
What’s Included
- SIG Sauer factory hard pistol case (gray polymer)
- Three 17-round steel SIG Sauer P320 magazines with orange followers
- SIG P320 operator’s manual
- SIG Sauer-branded cable lock (sealed)
Produced for police and government contracts, this full-size P320 comes from SIG’s Agency Vault allocation, making civilian availability uncommon. The serialized stainless-steel fire-control unit allows the owner to swap grip modules, slides, or calibers without an FFL transfer, giving long-term flexibility.
The X-Series grip module adds an extended beavertail, helpful magazine well flare, and aggressive surface texturing for confident control during rapid fire. A reversible magazine release accommodates left- or right-handed shooters.
The Nitron-finished stainless-steel slide features front and rear cocking serrations plus the factory PRO optic cut. XRAY3 tritium day/night sights are installed for fast alignment in varied light, and the 4.7-inch stainless barrel delivers full-size velocity and sight radius.
Inside, the flat-faced trigger breaks at a straight 90 degrees, promoting a consistent finger placement and predictable pull. Coupled with the striker-fired action and 17+1 capacity, the P320 X-Series Pro offers duty-grade performance in a ready-to-run package.