SIG Sauer P320 X-Series Pro Full-Size 9mm Luger Semi-Auto Pistol – LE Agency Vault, Optic-Ready Slide, Night Sights, 17+1
Built for law-enforcement professionals and rarely released to the civilian market, this P320 X-Series Pro Full-Size comes straight from SIG Sauer’s Agency Vault program. It combines a serialized stainless FCU for modularity, an optic-ready Nitron slide, and SIG’s X-Series ergonomics to deliver a duty-grade sidearm that collectors and shooters will both appreciate.
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 no signs of wear.
Bore Rifling: Excellent – sharp lands and grooves.
Specific Condition Notes: The pistol appears unused beyond SIG Sauer’s factory test-fire.
What’s Included
- SIG Sauer factory gray hard case
- 3× 17-round factory SIG Sauer steel magazines with orange followers
- SIG Sauer polymer magazine loader
This X-Series Pro model features a full-length Nitron-finished stainless slide with both front and rear cocking serrations and a factory optic cut that accepts SIG ROMEO2/ROMEO1T, Leupold DeltaPoint Pro, and other PRO-footprint sights without additional milling.
The serialized stainless-steel Fire Control Unit (FCU) is the heart of SIG’s modular system, allowing caliber and grip conversions while maintaining the original serial number. Coupled with the flat-faced X-Series trigger, it offers a consistent, crisp break ideal for duty or competition use.
The polymer X-Series grip module provides an enhanced beavertail, undercut trigger guard, and an integrated M1913 Picatinny accessory rail. Factory X-RAY3 tritium night sights deliver a bright green front dot and serrated rear blades with twin tritium vials for 24-hour visibility.
This pistol was produced under SIG’s restricted Law-Enforcement “Professional” program, making civilian examples scarce. Its as-new condition, modular design, and professional-grade features make it a standout option for shooters who demand duty-level performance straight from the box.