A July 21, 2025, memo for Air Force Global Strike Command (AFGSC) makes clear all AFGSC personnel are to pause use of Sig Sauer’s M18 pistol.

The M18 is a Sig Sauer P320 variant.

The memo has been issued in light of an “incident at F.E. Warren AFB.” During the duration of the investigation, personnel are to be equipped with M4 rifles rather than the M18 pistol.

The initial phase of the investigation will involve inspections of “all Wing-assigned M18 weapons systems,” conducted by “Combat arms inspectors.”

F.E. Warren AFB stated that “an active-duty Airman assigned to the 90th Security Forces Squadron, 90th Missile Wing, passed away on base while on duty in the early morning of July 20, 2025.”

Jason Wright, vice president of marketing at Sig Sauer, issued a statement to – News regarding the Air Force memo, saying, “Our hearts are with the service members and families impacted by the recent reported event at the F.E. Warren Air Force Base. We have offered assistance to the U.S. Military as they investigate the incident and remain willing to help in furtherance of their ongoing investigation.”