Sig Sauer P320 Full-Size Nitron Optic-Ready 9mm with SIGLITE Night Sights, 17-Round
The P320 Full-Size Nitron Optic Ready pairs the U.S. military–proven P320 chassis with a factory-milled slide that accepts SIG ROMEO2 and other popular red-dot footprints. A DLC-coated 4.7-inch carbon-steel barrel, tritium SIGLITE night sights, and a full-length Picatinny rail give shooters a duty-grade sidearm ready for optics, lights, and suppressor-height sight upgrades.
Built around Sig Sauer’s modular, serialized fire-control unit, this pistol lets owners swap grip modules, slides, and calibers without visiting a gunsmith. The striker-fired action offers a smooth, consistent trigger pull, while front and rear cocking serrations provide a positive purchase for slide manipulations even with gloves.
The Nitron-finished stainless-steel slide resists corrosion and wear, and its optic-ready PRO cut positions the dot low for a co-witnessed sight picture with the included SIGLITE tritium irons. A medium-size black polymer grip module balances the 17-round magazine capacity with comfortable ergonomics for most hand sizes.
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: The slide and frame display only light handling marks. The bore remains bright and clear with no fouling.
What’s Included
- SIG Sauer factory gray hard pistol case
- SIG Sauer P320 operator's manual
- One 17-round SIG Sauer steel magazine with red follower
The 4.7-inch DLC-coated barrel maximizes sight radius to 6.5 inches, aiding precision without sacrificing reliability. Its carbon-steel construction delivers long service life, while the durable coating eases cleaning.
A full-length, five-slot Picatinny rail accepts duty lights or lasers, and the medium polymer grip module features an integral undercut that helps manage recoil in rapid strings. The aggressive texturing offers secure purchase without being abrasive.
Sharing the same core architecture as the M17/M18 service pistols, this P320 benefits from the platform’s proven durability and extensive aftermarket support. Whether used as a duty pistol, competition foundation, or modular host for accessories, it arrives ready for immediate range time.