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malfunction that cause full auto

Discussion in 'Handguns: Autoloaders' started by JBrady555, Nov 14, 2012.

  1. JBrady555

    JBrady555 Well-Known Member

    Hey guys I have read some stories about malfunctioning guns causing full auto fire. I won't say I'm fearful of this, but it worries me when I think about my wife or other relatives having such a malfunction happen. Some people might be extremely suprised by something like this. This could be very bad if the gun came out of the shooters hand. Anyone ever seen this happen first hand? What causes such a problem?
  2. hentown

    hentown Well-Known Member

    Different causes for different firearm designs. I'd spend more money on Paxil, and less on firearms for a while! ;)
  3. oneounceload

    oneounceload member

    Ruger MKII went to full auto and was firing three shot bursts. Ruger never said what was wrong, they just fixed it and sent it back, although I suspect a sear went bad. Whatever happened also blew the extractor off the gun resulting in jams after a few three shot bursts
  4. JBrady555

    JBrady555 Well-Known Member

    LOL, I am a chronic worrier sometimes. I guess I'm just a "any thing that can go wrong will go wrong" kinda guy.
  5. forindooruseonly

    forindooruseonly Well-Known Member

    I had an acquaintance's Hi-Power go FA on me. He had "home-gunsmithed" it a bit for a better trigger. He claims it never went FA on him, but I have my doubts. Anyways, a brief explanation of the consequences convinced him to have it fixed.

    Generally, the only handguns that are going to go FA have been tinkered with a little too much. Rarely, a truly worn gun might, or I've heard of it, but have never seen or heard of a first hand account. It is a really, really rare event with a stock gun.

    I was shooting one handed when it happened to me, it dumped 8 or 9 rounds, and it was a handful for me. The last rounds went sailing over the berm, thankfully we were on a private ranch and there wasn't anything behind the backstop. It happens so fast that you don't have time to react, all you can do is hold on and try to keep it pointed in a safe direction. I think a worse case scenario would be panicking and dropping it, but I've also heard that the lack of resistance would kill the recoil and it wouldn't cycle if that happened. I, for one, am not willing to try that little hypothesis out.

    It also gave me the worst case of hammer bite that I'd ever seen..
  6. hentown

    hentown Well-Known Member

    Paxil is your friend! I took some bad advice from a guy on another forum and radiused the engagement suraces of my old Gen2 G17. It thought it was a G18 for about three weeks! Changed out the trigger bar and it worked fine after that. Really was a lot more fun when it was a faux G18, though! :)
  7. Guy de Loimbard

    Guy de Loimbard Well-Known Member

    Also take into account that it may be another factor other than the gun.

    When I first got into reloading one of my uncles gave me a whole load of different primers and powders that he had used to load .22-250. At the time I had an AR-15, so I could use most of them. I found the gun would shoot full auto if I used Federal Benchrest primers. Never had that happen with any other primer, or for that matter any other gun.
  8. Blue68f100

    Blue68f100 Well-Known Member

    I know of this happening one time to a guy that decided he wanted to do his own trigger work on a 1911. He took to much off the sear. I shot it, it was fun but a hand full consider a 1911 will run at 800+/min. This was on cheap parts that where not heat treated properly. This can also happen with MIM parts if not properly heat treated. This was the case early on when mfg started using MIM part to save cost. But in most cases it takes a lot of rounds to wear one out.

    Personally I would not worry about it. The case most all the time is someone doing their own trigger work and messed up.

    If you buy a quality gun there is no problem. As with any gun, proper maintenance is required to keep them running smooth and trouble free.
    Last edited: Nov 14, 2012
  9. Skylerbone

    Skylerbone Well-Known Member

    Best I can offer is to study the info available on each model you own. Worry is interest paid on a debt not owed, that's what my father always says anyway.

    Only personal account I know of is a friend and career LEO whose DPMS went racing for the follower. Last straw for that one, he sold it with full disclosure to another officer who fixed it.

    I did see a nasty squib last month that made an accordion out of a Browning shotgun. Slug didn't clear the barrel, shooter didn't think and second slug kersploded the barrel. I wanted to scold the owner as he explained how the ammo was to blame but it was not my place to do so and the store owner was already asking the right questions and cautioning against firing if the preceding round seemed at all abnormal.
  10. .357 magnum

    .357 magnum Well-Known Member

    Rock on!

    If it Goes Full Auto on you, just remember GOD has Blessed You! How Very Fortunate!
  11. Unka-Boo

    Unka-Boo Active Member

    I think I bought that gun at a gun show about 6 years ago...:eek:

    Well, prolly not the same one, but I had the same thing happen.....bought an Argentine HP used at a show, didn't get around to shooting it for a month. First time at the range was " bang, bang, BRRRRRAP!" :banghead:

    Someone had played "home gunsmith" on it too and I didn't catch that until I shot it...:(
  12. guyfromohio

    guyfromohio Well-Known Member

    SKS went full auto on me..... before it stopped firing altogether.
  13. firesky101

    firesky101 Well-Known Member

    I put an FEG back together wrong one day and it had some interesting habits. After it emptied most of a mag, back in the case it went and I pulled it down and fixed it that night. To answer your original question yes FA if not controlled properly or prepared for can have some devastating consequences. I recall a news story from a few years ago where a 5yo could not control the FA 9mm subgun that his family rented at the range. It had a tragic ending. If you do not screw with your sear however, the odds of a gun going FA is very low. An old mossberg .22 I had used to start tripling if I shot too many round through it without cleaning it. That was a warning sign that things needed attention. Most guns will give you a sign that there are problems before going FA on you (of the very, very small percentage of firearms that might have a problem that could cause FA)
  14. forindooruseonly

    forindooruseonly Well-Known Member

    It's a handful, ain't it! Hopefully all turned out ok. It is definitely a rude awakening.

    Hmm, I hope I'm missing something here.
  15. 76shuvlinoff

    76shuvlinoff Well-Known Member

    I have read the old Walther P38s could go full auto when decocked. The decocker on my Dad's bring-back didn't work when I got it so I replaced the drop bar. The decocker worked then but fortunately I only put one round in the pistol because it discharged.
    I remembered Dad had someone make a firing pin for it years ago, after I bought and installed a proper firing pin it's seems perfectly OK but I still won't decock it on a loaded chamber. There are stories out there where these P38s if worn or Budda'd will dump a full mag in a heartbeat.
  16. 2wheels

    2wheels Well-Known Member

    Most times when I hear about a pistol going full auto or otherwise going BANG when it ain't supposed to, somebody who didn't know what they were doing went and messed with the internals for whatever reason, often to improve the trigger pull.

    Or sometimes it's an old and possibly worn out or poorly maintained design. Many of these older guns have known issues that you can look out for, like some old double action pistols that have decockers that are known to fail, or SKSs slamfiring if cosmoline or other gunk gets around the firing pin.

    Other than that, I wouldn't worry too much about a gun going full auto on you.
    Last edited: Nov 16, 2012
  17. hentown

    hentown Well-Known Member

    IF there were many instances of firearms' spontaneously going full-auto, we'd see a lot more spontaneously-grinning shooters. :evil:
  18. mljdeckard

    mljdeckard Well-Known Member

    I don't see how it happening would ever be regarded as a good thing. If it happens, you aren't EXPECTING it. If you aren't prepared for it, you could lose your grip. If it is runaway fire, .....now you have a problem.

    And you have absolutely no way of knowing if BATFE will believe you when you tell them it was unintentional.
  19. BSA1

    BSA1 Well-Known Member

    I would suggest going to a revolver but then you would have to worry about running out of ammunition when attacked by a zombie mob.:eek:
  20. firesky101

    firesky101 Well-Known Member

    I have seen reports of a SAA going FA. Supposedly a firing pin that was over traveling was piercing primers. The gas escaping from the primer hole caused the hammer to shoot back and rotate the cylinder. Since the trigger was held down the hammer went ahead and fell on the next round. And it kept going like that till it had no more live rounds.

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