Sig Sauer P320-M18 9mm Carry — Coyote PVD, Night Sights, 3.9 in Barrel, 21+1 Capacity, 3 Magazines, No Case Included
The Sig Sauer P320-M18 is the commercial counterpart to the U.S. MHS M18, finished in coyote with a compact 3.9 in barrel and night sights. This example features the modular, serialized FCU for easy grip-module swaps, an ambidextrous manual safety, and a three-slot MIL-STD-1913 rail. It includes two 21-round magazines and one 17-round magazine, and follows the M18-prefixed serial format. Made in the USA and delivered without a case.
Condition
Overall Condition: Good condition, showing some signs of prior use and handling.
Bore Condition: Good - Clean, well-maintained, minor wear marks.
Bore Rifling: Good Rifling - Intact, well-defined lands and grooves.
Specific Condition Notes: Widespread surface scratches and handling blemishes are present on the exterior.
What’s Included
- Original case
- Two 21-round steel magazines marked "MADE IN ITALY" with polymer baseplates
- One 17-round steel magazine marked "MADE IN ITALY" with a polymer baseplate
This P320-M18 is the commercial variant of the U.S. M18 service pistol, matching the M18 format with a 3.9 in barrel and a carry-length grip in coyote finish. It uses Sig Sauer’s modular, serialized fire control unit, allowing grip-module changes without an FFL transfer. The Medium grip module on this pistol includes an integrated lanyard loop.
The slide wears a coyote PVD finish and is outfitted with front and rear serrations. Sights are duty-focused: a SIGLITE green-dot front night sight paired with a rear night sight mounted on a removable plate. The three-slot MIL-STD-1913 accessory rail on the dust cover supports common weapon lights.
Controls are fully ambidextrous where it matters most, with ambidextrous manual safety levers and ambidextrous slide catch levers. The magazine release is reversible to accommodate left- or right-handed shooters.
This pistol ships with two 21-round and one 17-round steel magazines, all stamped "MADE IN ITALY" with polymer baseplates. The platform supports a maximum on-board capacity of 21+1. As a commercial M18, it follows the exclusive M18-prefixed serial format and is made in the USA.