SIG Sauer P320 Full-Size Nitron 9mm – Modular Striker-Fired Pistol with Night Sights, 17+1 Capacity
The SIG Sauer P320 Full-Size Nitron delivers duty-grade performance in a modular platform that accepts size and caliber conversions. Built around SIG’s serialized stainless steel fire-control unit, this 9mm variant features a 4.7-inch carbon-steel barrel, black Nitron slide with front and rear serrations, and SIGLITE tritium night sights. Post-2018 striker and sear upgrades, a tool-less three-point takedown system, and the same core architecture adopted for the U.S. Army’s M17/M18 service pistols make this example stand out to both shooters and collectors.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Rifling Condition: Excellent Rifling – Sharp lands and grooves.
Specific Condition Notes: Light scratches and minor blemishes are visible on the slide and frame surfaces, but they do not affect function.
What’s Included
- SIG SAUER factory hard case (black polymer)
- SIG SAUER P320 owners manual
- SIG SAUER OWB holster
- Two 17-round steel magazines marked "MADE IN ITALY"
The P320’s modular fire-control unit is the legally serialized component, allowing easy swaps to different grip modules, slides, or calibers without tools or re-sighting.
A reversible magazine release, striker safety, disconnect safety, and takedown safety provide layered mechanical safeguards while preserving the single-action trigger’s crisp 6-lb break.
The Nitron-finished stainless slide carries SIGLITE three-dot tritium sights for 24-hour visibility and sports forward and rear serrations for confident manipulation.
At 17+1 rounds of 9mm, the full-size grip module delivers service-pistol capacity and adopts the same ergonomics fielded by U.S. forces in the M17/M18.
Made in Newington, New Hampshire, this pistol ships with factory case, holster, manual, and two Italian-made 17-round magazines—ready for range or duty use.