SIG Sauer P320 X-Series Professional Full-Size 9mm Luger | 17+1 | Law-Enforcement “Agency Vault” Optic-Ready Pistol
Built for duty and released from SIG Sauer’s restricted Law-Enforcement “Agency Vault,” this P320 X-Series Professional delivers full-size shootability in a modular package now available to civilian buyers. The pistol pairs a 4.7-inch stainless barrel with an optic-ready Nitron slide, a flat-faced X-Series trigger, and factory XRAY3 night sights—all in as-new condition.
Condition
Overall Condition: As-new condition with no signs of prior handling beyond what’s typical from inspection (see photos).
Specific Condition Notes: The pistol appears to have been fired only for factory testing and shows virtually no observable wear.
Bore Condition: Excellent – clean, mirror finish, no signs of wear.
Bore Rifling: Excellent – sharp lands and grooves.
What’s Included
- SIG Sauer P320 X-Series Professional Full-Size pistol
- 3 × 17-round SIG Sauer factory steel magazines with orange followers
- SIG Sauer factory molded carry case (black)
Released from SIG’s Law-Enforcement allocation, this pistol retains “Agency Vault” provenance—meaning it was built for police and government contracts and reaches the commercial market only through aftermarket channels.
The slide comes milled for SIG PRO RX-footprint optics (Romeo2, Romeo1T, DeltaPoint Pro) and wears a durable Nitron finish with front and rear serrations for confident manipulations.
Inside, the serialized modular fire-control unit allows straightforward caliber or frame swaps across the P320 family, while the flat X-Series trigger provides a crisp 90-degree break for repeatable accuracy.
An extended beavertail and molded 360-degree grip texture give full-size control, and the MIL-STD-1913 accessory rail accommodates lights or lasers for duty or home-defense roles.
Factory XRAY3 night sights—a luminous green front ring paired with two-dot rear tritium inserts—ensure fast sight acquisition in all lighting.