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Thread: Problem with a new BCM lower

  1. #101
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    Quote Originally Posted by POB View Post
    Was this a Magpul trigger guard. I had problems with Mags not dropping til I trimmed the tiniest bit of mold flash off the trigger guard. Now they all drop.
    Yes, the standard Magpul plastic trigger guard.

  2. #102
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    Well I just discovered my BCM lower that I SBR'd doesn't want to seat Gen3 PMAGs with a closed bolt. Goes in fine with bolt open. My Colts seat the Gen 3 PMAGs just fine with closed bolt.

    I don't even know who to be pissed at. All of my mags were Gen 2 until recently when I bought a 10 pack of the Gen 3, so the BCM lower was tested with Gen 2 before being sent off for engraving and a tax stamp.

    F*** me.

  3. #103
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    Quote Originally Posted by Bang4Buck View Post
    Well I just discovered my BCM lower that I SBR'd doesn't want to seat Gen3 PMAGs with a closed bolt. Goes in fine with bolt open. My Colts seat the Gen 3 PMAGs just fine with closed bolt.

    I don't even know who to be pissed at. All of my mags were Gen 2 until recently when I bought a 10 pack of the Gen 3, so the BCM lower was tested with Gen 2 before being sent off for engraving and a tax stamp.

    F*** me.
    Since I moved to Maryland my accumulation of mags has stopped and I somehow missed these issues.

    I just stripped a Noveske Gen2 to get engraved but it looks like an older serial that could have issues with the Gen3 Pmag. Gonna reinstall the mag catch and buy 10rd Pmag to try.

    I'm gonna engrave a more normal lower and maybe see about modifying the Noveske.

  4. #104
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    Quote Originally Posted by Bang4Buck View Post
    Well I just discovered my BCM lower that I SBR'd doesn't want to seat Gen3 PMAGs with a closed bolt. Goes in fine with bolt open. My Colts seat the Gen 3 PMAGs just fine with closed bolt.

    I don't even know who to be pissed at. All of my mags were Gen 2 until recently when I bought a 10 pack of the Gen 3, so the BCM lower was tested with Gen 2 before being sent off for engraving and a tax stamp.

    F*** me.
    What's the big deal? Be pissed at the out of spec magazine supplier. Use Spec mags and rock on.

  5. #105
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    There are reasons why some folks seem to recommend the following lowers in descending order, KAC, Colt, LMT. Dimensional accuracy and reliability of use of those dimensions come into play. None are without issue, but the issues in function occur less. I like some others for my own reasons. but those are specific to my tastes.

  6. #106
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    Spoke out of turn. Edited.
    Last edited by DreadPirateMoyer; 07-05-15 at 20:48.

  7. #107
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    This maybe slightly off topic, but has anyone had this sort of issue with a VLTOR lower? I was planning on going with either LMT or VLTOR for my next complete lower and I was leaning towards VLTOR because of the option to purchase a lower with the A5 system included.

  8. #108
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    My one and only BCM lower works fine with the six or so M3 mags that I have. That is an unfortunate situation and while I would want BCM to swap me for another lower, I wouldn't expect them to do so. I'm a big enough fan of theirs that I would probably just get another BCM and lower and hope it works. Hopefully it won't be an issue with the Gen III Noveske when I get around to buying mine, it was one of the considerations I had for selling my Gen II.
    Sic semper tyrannis.

  9. #109
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    Quote Originally Posted by GH41 View Post
    What's the big deal? Be pissed at the out of spec magazine supplier. Use Spec mags and rock on.
    Because PMAGs are the most widely used mags out there. I wish they didn't have this issue and I wish I had thought to test that lower with the Gen 3 before having it engraved and SBR'd.

  10. #110
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    Quality metal mags are very affordable these days.
    "Real men have always needed to know what time it is so they are at the airfield on time, pumping rounds into savages at the right time, etc. Being able to see such in the dark while light weights were comfy in bed without using a light required luminous material." -Originally Posted by ramairthree

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