Sig Sauer P320-M18 9mm Compact in Coyote Tan, 3.9 in Barrel, Ambi Safety, Optic-Cut Slide, 3x 10-Round Mags, DryFireMag Included
This Sig Sauer P320-M18 is the civilian counterpart to the U.S. military M18, finished in coyote tan with a compact 3.9 in slide on a carry-length grip module. It features the modular, serialized FCU design, ambidextrous manual safety and slide catch levers, and an optic-cut slide with a removable rear plate. This example includes three factory 10-round magazines and a DryFireMag training magazine, and it has been customized by removing the magazine safety pin to enable DryFireMag use.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Overall Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: The rear sight is missing. The magazine safety pin has been removed. There are visible signs of wear and handling, including scratches, blemishes, and areas of finish loss.
What’s Included
- SIG Sauer factory hard case
- 3 factory SIG Sauer 10-round steel magazines for the P320
- DryFireMag training magazine for SIG P320
The P320-M18 configuration here pairs a compact-length 3.9 in slide with a carry-length, coyote-tan polymer grip module. The serialized stainless-steel FCU is visible through the right-side window and matches the case label. The slide is rollmarked "SIG SAUER P320 M18," and the barrel hood is marked "9mm x 19," with the frame marked "NEWINGTON, NH, USA."
Controls are fully ambidextrous, including the manual safety levers and slide catch levers. The dustcover integrates an M1913-style accessory rail, and the slide carries front and rear cocking serrations for positive manipulation. The slide also features a removable rear plate and optic cut. The rear sight is currently not present; the front sight is a fixed front post.
This pistol is striker-fired and built around the P320 modular system, allowing grip and slide swaps enabled by the FCU design. It wears a coyote/coyote-tan finish with an aggressive grip texture for secure handling. Stated capacity is 10+1, and three factory 10-round steel magazines are included.
Customization note: the magazine safety pin has been removed to allow use with the included DryFireMag training magazine, as stated by the owner. This package includes that DryFireMag for dry-fire practice alongside the factory magazines and case.