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Air Force Pauses Use of M18 Pistols After Fatal Discharge at F.E. Warren AFB

Scott Witner - comments 62 comments
Air Force Pauses Use of M18 Pistols After Fatal Discharge at F.E. Warren AFB

A tragic incident at F.E. Warren Air Force Base has prompted the U.S. Air Force Global Strike Command (AFGSC) to suspend the use of all SIG Sauer M18 pistols. The decision follows the death of a Security Forces desk sergeant, reportedly killed by an unintentional discharge while the weapon remained secured inside a Safariland holster.

According to a widely shared memo dated July 22, 2025, and confirmed by multiple media outlets including The War Zone and Soldier of Fortune Magazine, the commanding general of AFGSC issued a force-wide directive to cease all use of the M18 sidearm pending the outcome of an investigation.

What Happened?

Social media posts and early reports suggest the incident occurred when the sergeant removed his holstered M18 from his duty belt using the Safariland QLS fork system. While the pistol remained holstered and untouched, it allegedly discharged on the table, striking the airman in the chest and fatally wounding him.

This highly unusual event—where a firearm discharged from within a holster with no physical manipulation of the trigger—has raised serious concerns both within military circles and among civilian firearms experts.

USAF holstered M18
Staff Sgt. Will Gonzales, 36th Security Forces Squadron armory NCO in charge, holsters a Sig Sauer M18 pistol on Andersen Air Force Base, Guam, Aug. 26, 2019. The M18’s trigger pull consistently draws back at 4.5 pounds every shot, increasing lethality, improving accuracy and providing Airmen an easier operational weapons platform. (U.S. Air Force photo by Airman 1st Class Michael S. Murphy)

Fallout and Immediate Action

In response, the Air Force Global Strike Command, which oversees some of the nation’s most sensitive strategic assets, issued a pause on the use of M18 pistols across the command. AFGSC personnel have been ordered to stop carrying or handling the weapon until a root cause analysis can be completed.

The Air Force has not yet released an official incident report, and details surrounding the cause of the discharge—whether mechanical failure, holster incompatibility, or other factors—remain unconfirmed.

Social Media Speculation and Growing Criticism

The incident has ignited debate across platforms like X (formerly Twitter), with some users calling for the military to abandon the M18 altogether. Proposed replacements include the Glock 19X, a firearm many in the military and law enforcement community view as more proven and reliable.

Critics argue that the issue may stem not from the M18 design itself, but from compatibility concerns with certain holsters, such as the Safariland retention system reportedly used in the incident. The Safariland QLS (Quick Locking System) fork allows holstered firearms to be quickly mounted and detached—possibly introducing risks when combined with striker-fired pistols if not properly secured or maintained.

The M18 in Military Service

The SIG Sauer M18, a compact variant of the M17 full-size pistol, was adopted as part of the U.S. military’s Modular Handgun System (MHS) program. It replaced aging M9 Berettas and was intended to streamline service-wide sidearm platforms. Since its introduction, the M18 has seen widespread issues across the U.S. Army, Air Force, Navy, and Marine Corps.

Despite its intended modularity and modern design, the M18 has faced criticism from some service members over trigger sensitivity and compatibility with legacy gear.

Looking Ahead

The investigation into the F.E. Warren AFB incident is still ongoing. Until official findings are released, it remains unclear whether the fault lies with the firearm, the holster, or a procedural error.

What is clear, however, is that the tragic loss of a fellow service member has reignited scrutiny around the M18 platform—and that scrutiny will likely shape future decisions about sidearm issuance, gear compatibility, and safety protocols across the U.S. military.

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Scott Witner

Scott Witner is a former Marine Corps Infantryman with 2nd Battalion, 8th Marines, and served with the 24th MEU(SOC) during a six-month deployment to the Mediterranean. He’s completed specialized training in desert warfare, mountain warfare, and jungle operations across the U.S., South Korea, and Japan. With over a decade in the firearms and outdoor industry, Scott has helped leading brands grow their visibility and reach through strategic marketing and content development. He currently resides in Northeastern Ohio, where he enjoys hiking, shooting, and testing related gear in the environments it’s intended to be used in.

62 thoughts on “Air Force Pauses Use of M18 Pistols After Fatal Discharge at F.E. Warren AFB”

  1. Whenever these incidents occur, I always ask if this has ever happened with an M17/M18. I ask that because those P320s have manual safeties. I believe this is a first. Now my question is, was the manual safety engaged? If so, how is it possible that the gun fired?

    The Glock 19X would be an interesting choice because we would finally have a Glock with a manual safety.

    Reply
    • The safety on the P320 only blocks the trigger itself. It does nothing to prevent movement of the firing pin if, for example, sub-standard parts that weren’t QC’d properly allow the firing pin to move off the sear.

      Reply
    • Standard Air Force carry procedure (at least what they taught me) was “round in the chamber, safety off.” SF may be different.

      Reply
    • The M18 manual safety only prevents the trigger from being pulled it DOESN’T effect the function of the striker. It doesnt matter if the safety is engaged or not.

      Reply
      • Which is great for the lighter trigger but sudden shocks or for my fcu twisting motion (think you fall and you land on the grip) have set off primer loads when I did some redneck testing. Still one of my most accurate pistols in 357sig especially but not one I am endorsing carrying ready to fire as much as a backup.

        Reply
    • The Glock 19’s grip angle sucks. I and many others have to rotate their strong hand my wrist downward to acquire the target. My wife owns a GEN3 G19. I built a G20 with a Polymer80 80% frame because it has a better grip angle.
      P.S. It cost more to build than buy a G20.

      Reply
  2. Nothing but problems after they dropped the M1911.
    Man that’s some real shit looking plastic on them pistols.
    I think the bullets are just mad that they’re shoved up that guns feed me hole and go off trying to get out.

    Reply
    • If you were stationed at Fe Fe Burn ’em, you would want to leave too! Someone will get an Article 15 and a reduction in rank. I was stationed there 4 years as a enlisted Security Police in the (former) 88th MSS, 90th SPG.

      Reply
  3. Strange that we weren’t experiencing “Accidental Discharges” such as these during the combined 100 plus years of the 1911 and M9, both exposed hammer fired, manual non-decocking safety equipped pistols. These things seem to be possessed – now that would be an accurate definition of “Ghost Gun”
    Too bad there aren’t any American manufacturers worthy of consideration in these trials, I’m thinking as I place my M&P 10mm in its hidey-hole in the Jeep.

    Reply
  4. Huh. It sure would be nice to know what is going on with Sig Sauer handguns. Design defect, manufacturing defect, or human error?

    I really like the idea of the U.S. military using hammer-fired semi-auto pistols with a double-action / single-action trigger PLUS a decocker. Load them up, put one in the chamber, and use the decocker to lower the hammer (without the gun going BANG!). At that point they are ready to go with a relatively firm and long (and safe) first trigger pull in double-action and all subsequent trigger pulls in single-action.

    But what do I know? That giant extra margin of safety might cost an extra $20 per handgun to a unit of government that historically has not seemed very motivated to minimize its budgetary requirements.

    Reply
  5. Amazing and sad ….how does a company let this type of thing happen? Much better when it was 3 models built by serious, conservative, anal-retentive guys named Jurgen or Klaus.

    Reply
  6. When I was active duty the M.P.s carried their weapons in condition three. I can’t recall a holstered weapon discharging.

    Reply
    • Gadsden Flag,

      That seems especially appropriate / reasonable during peacetime when the probability is extremely low that an M.P. would ever have to draw and shoot.

      Now, if the M.P.s were protecting a base during active combat, I would tend to think it is better to have one in the pipe (condition two with a hammer-fired pistol which has a decocker or condition one if it is a striker-fired pistol).

      Reply
      • Unfortunately, we are not in a peacetime. There exists the very real potential of bad actors attempting to storm a post/base gate, trying to gain entrance, and causing as much chaos as possible. Lord, I hope not. Just my two cents.

        Reply
        • Had to carry condition 3 all deployment in Afghanistan so not really a firm argument. Nor was that order but lots of blind space away from the blimps watching us more than the locals.

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          • And when I was deployed to Kandahar in 2020 we carried our M9s with the round chambered and safety off UNLESS we were in the chow hall and that was only because of the Army and in those instances we only flipped our safeties on.

          • Sounds like you had far less retarded orders and I am glad that changed. Having to risk article 15 and worse for being prepared absolutely sucked.

        • LazrBeam,

          You bring up an interesting question as to whether or not we are truly in a “peace time” period.

          From memory I can think of only three military installation attacks in the last 15 or so years. That would be about one attack every 5 years on average which seems reasonable. Assuming that we have something like 100 (roughly) military installations, that puts the odds of an attack at any given installation about 1 in 500 in any given year. As far as I can determine, we have only had one unintentional discharge causing serious injury or death (the subject of this article) in the last 15 years (referring to M.P.s only). Strictly speaking to the numbers, there is arguably greater risk to life-and-limb if M.P.s keep their handguns in condition 3 (no cartridge in the chamber) than if they keep their handguns in condition 2 or 1 (a cartridge in the chamber).

          That is definitely something to think about.

          I suppose if we want to split the difference, M.P.s could keep their handguns in Condition 2 or 1 as long as they ALWAYS keep their handguns pointed in a safe direction (even in their holsters)–which they should be doing anyway. Of course that assumes that a handgun would not discharge all by itself while an M.P. was pointing it at someone without yet wanting to pull the trigger.

          Reply
      • uncommon, I was referring to domestic posts during peace time. Of course, in a CBZ everyone is locked and loaded.

        Reply
  7. The USAF arming doctrine for the M18 is the same as it was for the M9; Security Forces on duty armed with an M18 will have a loaded chamber and firearm safety disengaged, i.e. on “fire”. This drug out trope about “holster issues” every time a Sig P320/M18/M17 incident is reported is so beyond beating a dead horse. The QLS and subsequent Safariland holster issed to Security Forces members with every M18 is the holster selected by Sig, and provided by them in the purchasing contract. Assuming this Defender did not modify their equipment (and as of now there’s nothing to say they did), we are just to accept that no holster on this earth from any company is safe, even the ones selected by Sig, but the handgun isn’t the problem? Make that make sense.

    Reply
  8. Primarily this is a terrible news for the loss of life. I am interested to know if they determined whether the weapon fired with the safety on? Manual safeties are supposed to make the type of accident very unlikely. If it was determined it happened, that would be a further very negative look on that p320 platform all together.

    Reply
  9. Very tragic. I can’t help but notice that the firearm was pointed unsafely, which made this infinitely worse. The four rules still apply, even to holstered firearms set on a table top.

    Reply
    • That was my first thought too.

      Sometimes I put my gun (still in its holster) on my desk while I’m doing a long stretch in my home office.

      I point it away from me. Always.

      Okay, yes, it is pointing toward the neighbor’s kitchen next to me. But since it only holds 9mm rounds, that round would need to go through my wall, and the neighbor’s wall, both of which contain concrete block, lath, stucco, and drywall. And paint, don’t forget the bullet stopping paint!

      Reply
      • I’ve got a desk holster for this exact purpose. The pistol is pointed straight into the concrete slab with mother earth beyond that.

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  10. Sig saved my marriage,I now have proof those 8 holes thru the Sheetrock was not my fault !, what address we shipping these things back to,aren’t some ranges banning them.

    Reply
  11. RIP to the ssgt airmen and condolences to his family. TBH the army should have just gone with the Hi-Point C9. (Street) battle tested, striker fired, cheap, manual safety and no spontaneous discharges a la the P320. That’s what I think!

    Reply
    • Jack Toffmore,

      There is another advantage to the Hi-Point C9: if a solder runs out of ammunition, the C9’s huge size, bulk, and weight make it a decent bludgeon!

      Reply
    • Those Hi-Points ARE ugly as sin but from what I’ve read, and been told by some who possess them, they are reliable as all hell and have an ironclad warranty.

      Reply
  12. SIG is in serious do-do. All they had too do was a huge recall like others have. Glad I didn’t get that 320 from my formerly favorite pawn shop years ago🙄 RIP to the deceased airman.

    Reply
  13. Has anyone, anywhere been able to replicate any of these unexpected discharges? If so, were the attempts made with identical circumstances?

    Asking for a friend

    Reply
      • I did look at u-tube. many claims, but little regarding attempts to replicate in exact circumstances. The examiners were beginning with claims by the individual involved, but not a full description of all elements involved. Much of the attempt to replicate is simply imagining a circumstance, then trying to force a discharge.

        The M-18 has a “heavier” trigger pull than the 320, so I would expect the every day owner to be susceptible to more frequent mishandling. For military, with the heavier trigger pull, seems a pistol at full rest, with no human interaction can suffer an uncommanded discharge. Have not read any other episodes of non-handling discharges.

        Reply
      • YouTube isn’t the only place where content is hosted, pal. You might as well have suggested that he do some searches at the New York Post’s site.

        During the Robert Farago days here on TTAG, there was an extensive drop-test done on one particular firearm that was suspected of discharging if dropped on its hammer. And yes, the TTAG testing confirmed it. Not sure if that was ever posted to YouTube.

        Reply
        • Sure lots of places host content

          YouTube has 10+ content creators posting videos about this problem, their content is also hosted other places like rumble.

          Reply
    • There are plenty of videos online. Someone would put a dummy round in the chamber and then drop the park or lightly tap the back of it. After that they would carefully takeout the dummy round and you’d see a dent in the primer from the firing pin hiring it. It really is surprising Sig did a “voluntary upgrade” but not a full on recall. Pretty much every brand out there will do a recall if something goes wrong.

      Reply
    • “This could not have happened with the Beretta 92”

      Makes one wonder why Beretta’s upgraded submision for trials failed to win. Support chain did not need to be replaced.

      Reply
  14. The P320 series is a huge albatross around Sig’s neck, and the sooner they get rid of it the better it will be for them. A company’s reputation is it’s most valuable asset, and Sig is allowing it to be destroyed by not facing up to this issue with the P320. If I was CEO, I’d have recalled every P320, refunded the purchase cost to every owner including the government, and discontinued production of that design. That would be a significant financial hit, but that can be handled. Loss of reputation is fatal.

    The sharks (your competitors) are circling Sig, and they are hungry and smell blood in the water.

    Reply
    • “A company’s reputation is it’s most valuable asset,. . .”

      It is curious SIG doesn’t cave to public perception.

      Reply
  15. No dog in this fight but I do have a serious question – as I read numerous blogs and comments it seems that all of the ‘uncomanded discharges’ have occurred with 9mm versions. Does anyone know if that applies to other calibers, like say .40 S&W? NOT intending to start a caliber wars discussion by any means……………….

    Reply

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