SIG Sauer P320-M18X RX 9mm Compact, Coyote PVD, ROMEO-M17 Red Dot, 3.9 in Barrel, 3x 21-Round Mags, With Case
This P320-M18X RX is a compact, M18-format 9mm with a factory-mounted SIG Sauer ROMEO-M17 red dot, coyote PVD slide, and X-Series carry grip with a flared magwell. It was manufactured in 2024 in Newington, NH, USA, and includes three 21-round factory magazines. Its modular P320-series FCU, no manual thumb safety, and proven M18 layout make it a standout, ready-to-run package.
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: This pistol shows little signs of prior use. The finish has only minor blemishing. The bore is clean and shiny.
What's Included
- SIG Sauer ROMEO-M17 red dot sight (factory mounted)
- Three (3) 21-round factory steel extended magazines with baseplates compatible with the X-Series magwell
- SIG Sauer factory hard case
The P320-M18X RX pairs the compact 3.9-inch barrel with the P320-series modular FCU design and no manual thumb safety. The X-Series carry grip module features a flared magwell that works seamlessly with the included extended 21-round steel magazines for a 21+1 capacity.
The factory-installed ROMEO-M17 red dot (Romeo M17 optic) mounts directly to the dedicated M17/M18 interface. The red reticle, battery cap, and control buttons are visible, and iron sights are retained in a configuration compatible with the optic.
The stainless-steel slide wears a coyote PVD finish and includes front and rear serrations, an M18 rollmark, and military-style MFR and PN codes. A three-slot Picatinny accessory rail on the dust cover supports lights or other rail-mounted accessories.
This pistol is marked and manufactured in Newington, NH, USA, with the factory SKU M18X-9-RX.




