In 2017, SIG Sauer won the U.S. Military MHS trials. These trials sought to find a replacement for the aging stock of M9 pistols. SIG's answer was the M17 and M18 Pistols. The M18 is a variant of the P320 series of modular pistols which make use of a serialized "frame" inside of a grip module. The use of this system allows for the pistol to be fit to any shooter's hand. This specific pistol is the General Officer's model, the rarest variation of the M18, which rarely sees the light of day in the civilian market. The United States Armed Forces have a long standing tradition of presenting a special sidearm to members who reach the rank of Brigadier General. The distinction on the M18 General Officer's model is the "GO" for General Officer serial number prefix. This pistol has the standard features of the standard M18 which finds itself in the holsters of the Marines, Air Force, and Navy, as well as having the aforementioned special serial number (GO5038). Included with the pistol is a small and large grip module, extra magazine, shipping box, and U.S Military manual.

Excellent, near new in box, as issued to a United States Armed Forces General Officer, retaining 99% plus original Coyote Tan finish on the slide with limited handing marks, and some wear marks on the chamber. Grip module is excellent with limited handling marks and crisp grip texture. Mechanically excellent. This is a possibly once-in-a-lifetime opportunity to own a SIG Sauer M18 General Officer's pistol.