SIG Sauer P320 X-Series Carry Pro 9mm 3.9" Law-Enforcement Agency Vault Variant – 17+1, X-Ray3 Sights, Optic-Ready Slide
This P320 X-Series Carry Pro comes straight from SIG Sauer’s restricted Agency Vault line, built for police and government contracts and rarely released to the civilian market. The hybrid setup pairs a compact 3.9-inch carbon-steel slide with a full-size X-Carry grip module, delivering service-grade ballistics with a controllable, 17-round frame. Factory X-Ray3 day/night sights, a flat-faced X-Series trigger, and direct-mount PRO optic footprint round out a package that blends duty reliability with modern modularity.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent – Clean, mirror finish, sharp lands and grooves.
Specific Condition Notes: The pistol appears unfired; however, there is a small blemish on the barrel’s metal finish.
What’s Included
- SIG Sauer factory hard case
- 3 × 17-round steel magazines marked “MADE IN ITALY”
The Agency Vault designation means this pistol was manufactured under SIG Sauer’s law-enforcement allocation, making retail examples uncommon. Its serialized fire-control unit (58J-prefix) anchors the P320’s modular design, allowing caliber or frame swaps without an FFL transfer.
The 3.9-inch carbon-steel barrel and black Nitron slide balance concealability with velocity, while forward and rear cocking serrations give positive purchase from any angle. The slide’s PRO optic cut accepts SIG ROMEO1 PRO, ROMEO2, or Leupold DeltaPoint Pro sights without adapters, letting the owner upgrade instantly.
SIG’s X-Series grip module brings an extended beavertail, deep trigger-guard undercut, and aggressive stippling for a secure firing grip. Its full-size profile houses 17-round magazines yet remains slim enough for carry. A four-slot MIL-STD-1913 rail on the dust cover supports white lights or lasers.
The flat-faced X-Series trigger offers a straight press to the break, complementing the striker-fired action for consistent pulls. Day/night X-Ray3 steel sights give a bright green tritium front dot flanked by rear tritium inserts, maintaining visibility in any lighting.