Built as the military version of SIG's commercial P320 line of handguns and adopted in 2017 by the United States Marine Corp, Air Force, and Navy to replace the aging stocks of Beretta M9 pistols. The pistol was selected for its modular design built around SIG's serialized fire control unit which allows grip modules to be swapped to fit shooters of any stature. The slide on this example is marked "SIG SAUER M18" on the left as well as having the military "MFR: 6ZWB1 PN: 13067088-1" marking above the takedown lever and fitted with a set of SIG night sights with the rear sight attached to the optics mount cover. The manual safety equipped FCU is fitted with an "M" size grip module. Includes original box with end label marked "SIGP320M18" and two extra 21 round magazines.

Excellent overall, retaining 98% plus original coyote tan finish with limited handling marks, a couple holster type marks at the muzzle, and crisp grip texturing. Mechanically excellent. Box is excellent.