Video — Sub-Gun Slamfire

This video appears to show a 9mm sub-gun with a malfunction. I am not familiar with the make and model of the weapon. Is it a closed bolt design with a firing pin floating / stuck? Or is it an open-bolt design that has it’s trigger / sear mechanism compromised?

Or as some have suggested on the internet, is the trigger “pinned”?

 
Marky
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Marky Mark

Marky Mark

Writer at John1911.com
Writer for john1911.com. Co-Host of the John1911 Podcast. Video content provider for John1911-TV.

Areas of focus: Defense and National Security, Modern Light Weapons, Analysis of the Geo-political / Military Relationship in the Context of Strategic Goals.
Marky Mark

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  • MickeyG

    Dang !

  • Mikial

    All the internet ninjas have conspiracy theories like “is the trigger pinned.” In the end, any open bolt design can potentially initiate a slam fire. I’ve told my Sterling story from Iraq enough times, so I won’t repeat it but there’s a reason manufacturers don’t build open bolt designs any more.

    • Or more accurately why the BATFE won’t allow semi-auto open-bolt weapons.

      Marky

      • Mikial

        Yeah, that too. One of the actual intelligent things they’ve done.

        • Well, if the goal is to stop full auto weapons, the open bolt concept is really 90% of the battle.

          Marky

  • Daniel, God is my judge

    All I know for sure is there was a LOT of excited chatter when he let the charging handle loose.

    • Yeah. I suspect it’s a sear / disconnector failure. Not “pinned”. Or whatever that is supposed to mean.

      Marky

      • Daniel, God is my judge

        I got one of the Century Arms C308’s a while back (I didn’t believe they were a pos. They are. I finally got it running right, but that’s a whole nuther story) Anyway, when you slapped the charging handle allowing the bolt to go into battery, then ejected the round that had just been chambered, the primer would be dimpled. I read somewhere that these guns have experienced slamfires. Therefore, I NEVER chamber a round unless the gun is pointed downrange.

        • Hmmm….good to know. I know of a “work” 308 AR that slammed fired soft federal match primers.

          Marky

          • Daniel, God is my judge

            I saw a video one time of a C308 slam firing when the bolt was slammed into battery, and they showed the primers dimpled. So I’m wondering if this is a common problem or because the guns use mil-surp bolt carrier groups if the firing springs could be weak. I thought I would try to buy a new HK spring and see if that changed anything.

          • If they are using military surplus parts then it could always be an issue. Especially if the weapon is purpose built to fire automatic or has a “floating” firing pin.

            It’s always good to check any weapon for this. Doubly so for semi-automatics.

            Marky

  • Joddy Grider

    Taurus MT9 G2 Subgun of a Brazil PD, supposedly they are reporting issues of these firearms going off with charging the bolt. They are a closed bolt gun though so interested in seeing the story.

    • Perhaps a firing pin design problem? Or trigger / sear design issue?

      Marky

      • Joddy Grider

        Yeah supposedly rumor has it they have seen this happen on a few different weapons. Since they dont import the MT9 to the US is likely why we dont hear about it. But even a google search doesnt turn up anything other than this video. I guess we shall wait and see. Given the safety issues and lawsuit settlement it seems like Taurus is having some QC and design issues in recent years. Personally I have never had a issue, only Taurus I have owned was a Stainless PT1911 that shot as well or better than some of my other 1911’s costing 3-4x as much. Would still love to pick up a Judge for fun, flashbacks of the old Thunder 5 from the 90’s 😉 Just makes me giggle LOL

        • I might pick up a Governor if the price was right in the used gun counter.

          Marky