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Thread: NSR 13.5 rail and BCM 16" upper. Something is crooked.

  1. #21
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    So is this a quality control issue? Or something to be concerned about for future buyers?

  2. #22
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    I've only read of a few so far...
    But if I hadn't switched to the 13" VTAC rails, I don't know if I would have cared/noticed...the 12" C4s weren't off by much (I think they can be canted a bit during install and look more aligned).

    I defintely think it's something people should check (though I don't know how many people are going to try out a 2nd FF handguard). I knew I was going with a tube handguard, but they didnt offer it in LW and BHF, so I got the C4 to try out (and they are super well done and insanely lightweight).
    Last edited by evi1joe; 08-21-13 at 00:53.

  3. #23
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    I spoke to a gentleman from BCM today. I told him the details about the problem, and said that I would try sighting it in and seeing if I had any issues.


  4. #24
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    The barrel extension flange surfaces, front and back, are out of parallel. A little bit here translates into a lot at 13.5". My guess..... seen it, in the extreme. Most people/manufacturers would not think to check for this

  5. #25
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    It probably will sight in with lots of extra windage.
    I'm worried about mine because I tend to only lose 2MOA vertical when I switch the TR24G between my two old uppers...I sold one to get this, so I'd hate to have to crank the windage 30 clicks one way and back switching uppers.

    Did they offer to replace or repair it, or just suggest you shoot it?

  6. #26
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    Quote Originally Posted by Ned Christiansen View Post
    The barrel extension flange surfaces, front and back, are out of parallel. A little bit here translates into a lot at 13.5". My guess..... seen it, in the extreme. Most people/manufacturers would not think to check for this
    Is there a way I can verify this with calipers or some other method?

  7. #27
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    Quote Originally Posted by 1911-A1 View Post
    Is there a way I can verify this with calipers or some other method?
    Could use a square or a machinest square/ruler

  8. #28
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    1911-A1: Any update on the sight in and what, if anything BCM offered to do to rectify the situation?

    evi1joe: Any feedback from BCM on your return?

    I'm quite interested because I have a new BCM BFH 16" Mid Length LW upper that I'm planning to install either a NSR, or one of the new BCM Handguards (when released) on. The FSB has to be shaved to do this and I'd be pretty disappointed if the end result isn't a centered barrel. Thanks.

  9. #29
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    It will arrive Wednesday--I'll post back then after I take off the C4 and put on a VTAC...the extra inch and the circle-tube shows any misalignment more. Fingers crossed.

    When I asked them if they could tell me what they did to it, I got what seems like a generic reply:
    "We inspected, repaired, replaced parts as necessary, & test fired, you are good to go. Enjoy!"

    Here's hoping I am GTG.

  10. #30
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    evi1joe: Thanks very much for the update. I really hope it's squared away when you receive it. Looking forward to hearing how it works out and your thoughts on what they might have done.

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