SIG SAUER P320-M18 9mm Compact, Coyote PVD, Optics-Ready, 3.9 in Barrel, 10+1, Ambi Safety
This commercial P320-M18 pairs a coyote PVD slide with a matching coyote polymer grip module and ambidextrous manual safety. It is optics-ready with a removable rear-sight plate, features a compact 3.9 in barrel with a carry-length grip profile, and comes with a 10-round Italian-made magazine. The frame is marked Newington, NH, USA, and the case label (model 320CA-9-M18-MS-10) is dated March 14, 2024; the FCU serial window shows an M18A... prefix matching that label.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Light handling marks from prior use are present. See photos for close-ups.
What’s Included
- SIG SAUER factory hard case
- SIG SAUER Operator's Manual
- 1x 10-round steel magazine marked "MADE IN ITALY"
The P320-M18 configuration here combines a compact-length slide and 3.9 in barrel with a carry-length grip, delivering a 10+1 capacity in 9mm Luger. It is striker-fired with an ambidextrous manual thumb safety, ambidextrous slide-catch levers, and a left-side magazine release. A loaded chamber viewport provides a quick visual check.
The coyote PVD slide and matching coyote grip module create a uniform service-style appearance. The grip module includes a lanyard slot, and the dustcover carries an integral 3-slot accessory rail for lights or lasers. Fixed 3-dot sights are installed, with an H3-marked rear sight on a removable plate.
This slide is optics-ready, using a removable rear-sight plate secured by two screws to access the optics cut. The sight radius measures 5.8 in, aiding practical accuracy while keeping the package compact and easy to carry.
Build details and markings align with current commercial M18 production: frame marked Newington, NH, USA; case label model 320CA-9-M18-MS-10 dated March 14, 2024; and FCU window showing an M18A... prefix consistent with the case label. The included 10-round steel magazine is marked Made in Italy with witness marks to 10.
Factory measurements list an overall length of 7.2 in, height of 5.5 in, width of 1.6 in, and a weight of 28.1 oz. These dimensions, together with the optics-ready slide and ambidextrous controls, make this M18 a well-rounded compact service pistol.