SIG Sauer P320-M18 Carry 9 mm – Early Civilian “Coyote” with Wilson Combat Grip & Five Magazines
Adopted by the U.S. Marine Corps as the M18, this civilian-legal P320-M18 Carry delivers the same modular striker-fired system, coyote-tan PVD finish, and optics-ready slide found on its military counterpart. What makes this particular example stand out is the factory-matched serial prefix “M18-,” an April 2020 build date from the first wave of commercial production, plus a Wilson Combat WCP320 grip module already installed for enhanced ergonomics. Whether you collect modern service pistols or want a duty-grade carry gun with room to grow, this M18 checks the boxes.
Condition
Good overall. The coyote PVD slide shows scattered light handling scratches against an otherwise even finish. Controls are crisp, the night sights remain bright, and the modular fire-control unit is clean. The 3.9″ carbon-steel barrel sports a mirror-bright bore with sharp lands and grooves—rated Excellent in both finish and rifling integrity.
What’s Included
- SIG Sauer factory hard case (grey) & P320 operator’s manual
- Wilson Combat WCP320 Carry grip module, coyote-tan (installed)
- SIG Sauer P320 Carry OEM grip module, coyote-tan, Medium size
- 4 × 21-round Mec-Gar steel magazines with FDE floorplates
- 1 × 17-round flush-fit Mec-Gar magazine
- Multi-Holsters carbon-fiber pattern IWB Kydex holster
Built around a serialized stainless-steel fire-control unit, the P320 platform lets you swap grip modules and slides without another FFL transfer. The included Wilson Combat module adds aggressive starburst texturing, a high under-cut trigger guard, and a straighter grip angle—features many shooters install immediately after purchase, now already done for you. If you prefer the original feel, the untouched SIG grip comes in the case.
The coyote-tan PVD slide carries front and rear serrations for confident manipulation and a removable optic plate cut for the DeltaPoint Pro/ROMEO-PRO footprint. Tritium SIGLITE #8 night sights ride high enough to co-witness most micro red dots and provide a 5.8″ sight radius on their own. Internally, SIG’s striker-fired action breaks cleanly, and the ambidextrous manual thumb safety mirrors the military spec while giving left- and right-handed users an extra layer of control. A reversible magazine release and MIL-STD-1913 accessory rail round out a pistol equally at home in duty, personal-defense, or competition roles.
With five high-capacity magazines, an optics-ready slide, two grip modules, and a ready-to-wear holster, this early-production M18 offers a turnkey package for shooters who appreciate the lineage, modularity, and field-tested reliability of SIG’s latest service sidearm. If you’ve been waiting for a well-equipped P320-M18 in proven condition, this is an opportunity worth acting on.