Sig Sauer P320 Nitron Full-Size .40 S&W 17+1 Striker-Fired Pistol
The Sig Sauer P320 Nitron Full-Size pairs a 4.7-inch stainless barrel with the brand’s modular, serialized fire-control unit, giving shooters a .40 S&W sidearm that can swap calibers and grip modules without gunsmithing. Finished in matte black Nitron and built on a black polymer frame, this post-upgrade production gun offers proven military lineage, a reversible magazine release, and steel 3-dot sights that stay true under recoil.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling – Sharp lands and grooves.
Specific Condition Notes: Minimal handling marks are present but do not affect operation or appearance.
What’s Included
- Sig Sauer P320 Nitron Full-Size .40 S&W pistol
- Two 17-round factory steel magazines stamped “MADE IN ITALY”
The serialized stainless-steel fire-control unit (FCU) is the heart of the P320 platform, allowing caliber conversions to 9 mm, .357 SIG, or .45 ACP with factory X-Change kits. This flexibility lets owners tailor the pistol to mission-specific needs while keeping a single serialized component.
A matte black Nitron slide with front and rear serrations provides corrosion resistance and positive manipulation in any condition. Inside, the 4.7-inch stainless barrel delivers full-size velocity and accuracy, complemented by a 6.6-inch sight radius and steel 3-dot contrast sights.
The striker-fired action incorporates a striker safety, disconnect safety, and a 3-point takedown system that requires the magazine to be removed and the slide locked before disassembly—adding layers of mechanical security.
The full-length MIL-STD-1913 accessory rail offers five slots for lights or lasers, while the aggressive molded grip texture and reversible magazine release ensure confident control for right- or left-handed shooters.