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Thread: Help with a Gas-Piston

  1. #11
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    it seems more piston problems are popping up I am sticking to the DI system till all the bugs are worked out .


    NRA Member

  2. #12
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    Quote Originally Posted by warpigM-4 View Post
    it seems more piston problems are popping up I am sticking to the DI system till all the bugs are worked out .
    Same here. I'll buy one if a version is ever developed that is in wide use for 10 years with a good reputation.
    "You people have too much time on your hands." - scottryan

  3. #13
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    A friend of mine have been having the same issues with his POF as well. Based on what I observed it looked like his extractor was the culprit. He was going to install a Buffer Technologies extractor upgrade kit (upgraded spring, black rubber insert, and o-ring) to see if it made a difference.

    This may very well be the same cause of your problems. Have you tried this?

    ADDED: Just because it's a piston system, a DI system, delayed blowback, or what-have-you-system; it doesn't mean that you should neglect keeping your gun lubed.
    We must not believe the Evil One when he tells us that there is nothing we can do in the face of violence, injustice and sin. - Pope Francis I

  4. #14
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    Quote Originally Posted by jmart View Post
    Have you cleaned the ejector? Removed it to see if there's any crud in the tunnel? Put a couple drops of CLP in there and work the plunger back and forth?

    Sounds like extraction is working fine, you're just not getting the cases ejected. Either the case is trapped in a "too tight" extractor hook or something is impeding the ejector working. Just a thought.
    Quote Originally Posted by CarlosDJackal View Post
    A friend of mine have been having the same issues with his POF as well. Based on what I observed it looked like his extractor was the culprit. He was going to install a Buffer Technologies extractor upgrade kit (upgraded spring, black rubber insert, and o-ring) to see if it made a difference.

    This may very well be the same cause of your problems. Have you tried this?

    ADDED: Just because it's a piston system, a DI system, delayed blowback, or what-have-you-system; it doesn't mean that you should neglect keeping your gun lubed.
    Looks like I might need to play with the extractor some. Thanks for the tip.

    By the by, I do know how to keep a DI system running, even when it's filled with mud or sand and not cleaned well for weeks of patroling. That's one of the things that's frustrating me about this weapon. It is not keeping up with the DIs on its left and right.

    It also has an interesting bolt carrier: the rear of it is designed to fit tightly into the buffer well. This could be causing issues as well. They are keyed carriers so I could take it apart and experiment with others.

    I know that there are reliable Gas-Piston M4s out there. My buddy has a 416 that sold me on the concept. I have heard of POFs that rocked. This one doesn't.

  5. #15
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    It's Working!

    Here's a copy of the email I sent POF. I want to ensure that my experience, and stupidity, are known. I am to blame and not the system.

    Chris,

    The clue phone has been ringing and I finally answered it. I am apologizing for any terse words. I am copying this to all those that received my initial complaints. I feel like an idiot, not for the first of last time, but I am learning.

    My weapon's maintenance has been poor. I got the bright idea to switch out the lowers and POF upper shot fine. I pulled out the buffers and the pin to the rear was sticking out about an eighth of an inch and the pad was deformed. I switched out buffers and the weapon fired fine.

    Lesson learned: do a full take down as part of the maintenance routine, DOH! Maintenance is as much an inspection as it is a cleaning. I knew this as a PSG, and I taught my troops that, now I am relearning it.

    I am still challenged by how hard the piston knob is to remove. It requires some bolt slamming and some hardy tools to twist and pry off. It would also be nice if a copy of the user manual came with the system. Or maybe is did and I misplaced it...

    Anyhow, apologies again and thanks for your assistance.

    {signed}

  6. #16
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    Glad you looked it over well and figured the problem out.

    Chief Armorer for Elite Shooting Sports in Manassas VA
    Chief Armorer for Corp Arms (FFL 07-08/SOT 02)

  7. #17
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    i hope everyone else that commented on this thread has read the last entry. glad it worked out.

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