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Thread: Need advice re: severe malfunction today

  1. #1
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    Need advice re: severe malfunction today

    I need some input please. I have a new POF-415 that has only been fired on 3 occasions to date. The first time I fired it I had recurrent failures to feed and one severe failure to extract requiring a rod from the muzzle to push out a spent case. I notified the manufacturer who told me to no longer use Wolf ammo ( had been given a case gratis). I subsequently bought a case of brass Remington surplus military 5.56 and had similar FTF problems so changed magazines as well thinking that could be the problem after the second time shooting it. Today, the third time, had recurrent FTF and extraction problems, the worst one being with the bolt being 3/4 closed. Since I was not firing the weapon at the time, I could not tell if it was a FTF or FTE problem with a live round in the chamber or a spent one that did not extract. In any case, the bolt was completely stuck and would not budge even after I dropped the magazine. The charging handle could not be retracted. The range would not permit me to leave with a possibly loaded weapon so called a gunsmith to the range who was able to tap the bolt back far enough to eject what turned out to be a spent case, however the bolt remains completely jammed and won't budge. I have never seen or heard of a malfunction like this one. I keep the firearm meticulously clean and this occurred after shooting about 150 rounds.

    Any comments, advice , possible etiologies or diagnosis would be greatly appreciated. I intend to contact the manufacturer tomorrow to arrange returning it for repair.

    many thanks,
    Dr. Mike

  2. #2
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    so the bolt/BCG is still stuck partially open in the receiver?

    maybe having an over-pressure issue, and blew a primer, which is now wedged in there? sounds like the weapon should go back to POS for service/replacement.

  3. #3
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    Here is what I think. You have a tight chamber. In the process of you shooting you blew a primer and it is lodged in the upper receiver in between the receiver and the BCG. I have seen this happen more than enough times and had to deal with it in Iraq.

    I had to completely disassemble the weapons and remove the lower receiver extension and BCG.

    My diagnosis in the end was it was a bad combination of ammo and tight chamber.

    Can you please elaborate more specifically on the Remington milsurp ammo?

    Also, I would be very cautious when a company says not to fire Wolf ammo in their gun. Though I do not use it, you should be able to use it.


    Quote Originally Posted by Dr. Mike View Post
    I need some input please. I have a new POF-415 that has only been fired on 3 occasions to date. The first time I fired it I had recurrent failures to feed and one severe failure to extract requiring a rod from the muzzle to push out a spent case. I notified the manufacturer who told me to no longer use Wolf ammo ( had been given a case gratis). I subsequently bought a case of brass Remington surplus military 5.56 and had similar FTF problems so changed magazines as well thinking that could be the problem after the second time shooting it. Today, the third time, had recurrent FTF and extraction problems, the worst one being with the bolt being 3/4 closed. Since I was not firing the weapon at the time, I could not tell if it was a FTF or FTE problem with a live round in the chamber or a spent one that did not extract. In any case, the bolt was completely stuck and would not budge even after I dropped the magazine. The charging handle could not be retracted. The range would not permit me to leave with a possibly loaded weapon so called a gunsmith to the range who was able to tap the bolt back far enough to eject what turned out to be a spent case, however the bolt remains completely jammed and won't budge. I have never seen or heard of a malfunction like this one. I keep the firearm meticulously clean and this occurred after shooting about 150 rounds.

    Any comments, advice , possible etiologies or diagnosis would be greatly appreciated. I intend to contact the manufacturer tomorrow to arrange returning it for repair.

    many thanks,
    Dr. Mike
    Last edited by Iraqgunz; 07-18-10 at 20:17.



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  4. #4
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    Quote Originally Posted by bkb0000 View Post
    sounds like the weapon should go back to POS for service/replacement.
    Freudian slip?

    OP, when the final casing was removed you are positive it was a spent casing? Just getting all of the data to rule out that a bullet isn't wedged in there somehow.

    Also, what mags were you using?
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  5. #5
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    I can 99.99% guarantee there is no bullet lodged anywhere. There is something that is preventing the BCG from moving. I am almost certain that there is going to be a primer (or even worse a part of the forward assist mechanism) wedged in there.

    I also doubt the mags are an issue either. He has other issues going on as well.

    Quote Originally Posted by WEC View Post
    Freudian slip?

    OP, when the final casing was removed you are positive it was a spent casing? Just getting all of the data to rule out that a bullet isn't wedged in there somehow.

    Also, what mags were you using?
    Last edited by Iraqgunz; 07-18-10 at 20:30.



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  6. #6
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    Quote Originally Posted by Iraqgunz View Post
    I can 99.99% guarantee there is no bullet lodged anywhere. There is something that is preventing the BCG from moving. I am almost certain that there is going to be a primer (or even worse a part of the forward assist mechanism0 wedged in there.

    I also doubt the mags are an issue either. He has other issues going on as well.
    I had a LWRC M6A2/piston upper that had a similar malfunction. It ended up being a piece if the broken firing pin retaining pin. I replaced it with a KNS solid pin.

  7. #7
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    Quote Originally Posted by Iraqgunz View Post
    Also, I would be very cautious when a company says not to fire Wolf ammo in their gun. Though I do not use it, you should be able to use it.
    100%

    your gun should cycle any ammo you putz in it. this seems to be a big cop-out disclaimer some manfers have.

  8. #8
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    More on Severe Malfunction Today !

    Ok, being a newbie, I was not aware of the significance of other info to give you. I did notice on two occasions today blown primers. I have been shooting my entire life (not ARs) and have never seen one. I noticed by chance a piece of debris on one of my mags and saw it was a prime,r and then located the spent casing it came from. Later on, noticed a second one. The case that ultimately was removed DID appear to have a primer in it however, who knows if there was not some remnant from a prior occurrence. I was not able to separate the upper and lower receivers since the bolt is jammed midway in the breech. I was using magpul magazines and the ones that came with the rifle so I do not think it was a mag problem this time. I have also heard that Wolf ammo should be no problem and a friend of mine with the same rifle has never had a problem with any ammo put through it. What causes a primer to blow? Is it faulty ammo or something wrong with the gun or a combo of both? What can the manufacturer do to fix this problem? Ammo was purchased from Natchez, came with 3 stripper clips of 10 rounds each per box.

    To the fella that this happened to in Iraq, I feel for you because the first thing I thought of when this happened to me is how deep **** one would be in if this happened in battle!! Hope you had a sidearm with you !!

    Any more input you can give me will really be appreciated.

    many thanks

    Mike

  9. #9
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    a chamber reaming is probably your answer

    to get the thing disassembled, you might have to go in through the RE. unscrew the castle nut, pull the RE, and see if you can work the carrier lose from behind. try looking up the magwell first, though.. if you're lucky, you might see the primer wedged in right there and pick it out.
    Last edited by bkb0000; 07-18-10 at 21:05.

  10. #10
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    The problem is generally caused by a tight chamber. The only way to know for sure is to check the chamber with a chamber checker from Ned Christiansen. Fortunately when it happened with our Bushamsters it was on the one-way range.

    There is always a chance it could be the ammo. To rule it out (once you get it cleared) is to buy known reliable ammo and shoot it and see what happens.

    My feeling tells me that the chamber is tight and is not a real 5.56.

    Quote Originally Posted by Dr. Mike View Post
    Ok, being a newbie, I was not aware of the significance of other info to give you. I did notice on two occasions today blown primers. I have been shooting my entire life (not ARs) and have never seen one. I noticed by chance a piece of debris on one of my mags and saw it was a prime,r and then located the spent casing it came from. Later on, noticed a second one. The case that ultimately was removed DID appear to have a primer in it however, who knows if there was not some remnant from a prior occurrence. I was not able to separate the upper and lower receivers since the bolt is jammed midway in the breech. I was using magpul magazines and the ones that came with the rifle so I do not think it was a mag problem this time. I have also heard that Wolf ammo should be no problem and a friend of mine with the same rifle has never had a problem with any ammo put through it. What causes a primer to blow? Is it faulty ammo or something wrong with the gun or a combo of both? What can the manufacturer do to fix this problem? Ammo was purchased from Natchez, came with 3 stripper clips of 10 rounds each per box.

    To the fella that this happened to in Iraq, I feel for you because the first thing I thought of when this happened to me is how deep **** one would be in if this happened in battle!! Hope you had a sidearm with you !!

    Any more input you can give me will really be appreciated.

    many thanks

    Mike



    Owner/Instructor at Semper Paratus Arms

    Facebook: https://www.facebook.com/SemperParatusArms/

    Semper Paratus Arms AR15 Armorer Course http://www.semperparatusarms.com/cou...-registration/

    M4C Misc. Training and Course Announcements- http://www.m4carbine.net/forumdisplay.php?f=141

    Master Armorer/R&D at SIONICS Weapon Systems- http://sionicsweaponsystems.com

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