Used Sig Sauer P320 M18 MILITARY OVERRUN – 9mm, Optic Ready, Manual Safety, (3) Mags
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Description
The Sig Sauer P320 M18 is the commercial variant of the U.S. military’s officially adopted sidearm for the Marine Corps, bringing battle-proven performance to civilian shooters. Chambered in 9mm, the M18 features a 3.9" barrel, coyote-tan finish, and a modular grip frame system with ambidextrous controls.
This pistol comes optics-ready with a factory slide cut for direct-mounting red dots like the Sig ROMEO1 PRO or Leupold DeltaPoint Pro. The P320 M18 includes SigLite front night sights and a rear sight plate that allows co-witnessing when an optic is mounted. With a flat-face trigger and integrated manual safety, it combines modern modularity with classic control preferences.
Includes one 17-round and two 21-round magazines, making it range- and duty-ready out of the box.
Specifications:
| Specification | Detail |
|---|---|
| Manufacturer | Sig Sauer |
| Model | P320-M18 |
| Caliber | 9mm |
| Barrel Length | 3.9" |
| Slide | Optic Ready w/ Night Sights |
| Frame | Modular Polymer, Coyote Tan |
| Trigger | Striker Fired, Flat Face |
| Safety | Manual Thumb Safety |
| Sights | SigLite Front, Night Sight Rear Plate |
| Capacity | (1) 17-Round Mag, (2) 21-Round Extended Mags |
| Made in | United States |
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