Sig Sauer P320-M18 9mm Luger with Flux Raider X Micro-PDW Chassis, Manual Safety, Coyote Finish, 21+1 Capacity
This P320-M18 pairs Sig Sauer’s battle-proven 9mm fire-control unit with the Flux Defense Raider X micro-PDW chassis, delivering duty reliability in a compact, spring-loaded, telescoping-stock platform that remains a non-NFA handgun. An optics-ready coyote PVD slide with SIGLITE tritium night sights, ambidextrous manual safety, and 21-round magazines make this customized M18 a versatile choice for defense or range use.
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.
Bore Rifling: Excellent – Sharp lands and grooves.
Specific Condition Notes: The slide and chassis show a few minor, superficial scratches and blemishes. Bore remains clean and shiny.
What’s Included
- Sig Sauer P320-M18 fire-control unit installed in Flux Defense Raider X P320 micro-PDW chassis
- Coyote polymer grip module with diamond logo
- 2 × 21-round SIG Sauer steel magazines
- 2 × 17-round SIG Sauer steel magazines
- Sig Sauer P320-M18 carry-size coyote polymer grip module
- Brouwer M1811 P320 coyote polymer grip module
- OEM P320 parts set, including factory 3.9-inch barrel and controls
- SIG Sauer factory hard case
The serialized M18 fire-control unit anchors a fully modular setup. Swap grip modules, calibers, or slides without replacing the serialized core, allowing straightforward adaptation to different missions or preferences.
The Flux Raider X chassis adds a spring-loaded steel stock that telescopes from 11 inches collapsed to 18 inches extended, enhancing stability while keeping the firearm classified as a handgun. An integrated spare-magazine well marked “PULL BOTH MAGS” speeds reloads, and a backup aperture sight is built into the buttcap.



