Sig Sauer P320-M18 9mm Compact Pistol | Coyote PVD | Optics-Ready | Night Sights | 17+1
The P320-M18 is the commercial version of the U.S. military’s M18 sidearm, offering the same modular fire control unit, coyote-tone finish, and ambidextrous controls in a compact 9mm package. This specific pistol pairs a 3.9-inch carbon-steel barrel with an optics-ready slide and factory SIGLITE tritium night sights, delivering duty-grade performance in a carry-sized frame.
CONDITION
Overall Condition: Good – Shows some signs of prior use and handling.
Bore Condition: Excellent – Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent – Sharp lands and grooves.
Specific Condition Notes: The slide and frame display visible handling marks and finish wear consistent with regular range use. All controls function properly, and the bore remains bright.
WHAT’S INCLUDED
- Sig Sauer P320-M18 pistol
- One 17-round steel SIG Sauer magazine
The coyote PVD-finished slide is cut for direct mounting of SIG ROMEO-M17, Leupold DeltaPoint Pro, and other compatible optics, giving you quick access to red-dot capability without additional plates. Front and rear diagonal serrations, along with forward chevron serrations unique to the M17/M18 series, provide positive grip from any angle.
Ambidextrous manual thumb safeties, a reversible magazine release, and fully ambidextrous slide stop levers support left- or right-handed operation straight from the factory. The curved trigger retains the P320’s consistent striker-fired break while remaining part of the modular fire control unit, allowing grip module swaps if desired.
A stainless-steel internal chassis carries the serialized UID matrix, mirroring the military specification for durability and modularity. The polymer grip module arrives wrapped with adhesive grip tape for added texture and control during rapid strings of fire.
Factory SIGLITE night sights sit tall enough to co-witness with many micro red dots, ensuring a clear sight picture in low-light conditions even without an optic installed. An integral accessory rail at the dust cover accepts lights or lasers for duty, home-defense, or range setups.



