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Thread: BCM BCG tool marks - a non-issue

  1. #1
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    BCM BCG tool marks - a non-issue

    Was just looking around TOS and seen a thread on this topic. Some guys have BCG's that have a condition where the forward assist grooves are transfered down into the top edge of the lower rail. I have 2 BCG's right in front of me still in the bag and I'll be dang if one of them has these marks and the other don't. I just ordered a 3rd BCG not more than 5 min ago - oh yeah, they are in stock again.

    I'll see if I can take a pic through the bag and post it. Tried to call Paul and ask about it but got the machine and I don't know if they are even still in at this hour.

    Anyone else seen this? Is this normal (I wouldn't think so)? Seems to me like it could cause wear in the upper? It may be alright but I'd feel a lot better if the cuts weren't there.

    ...........

    ***UPDATED*** response from BCM

    Quote Originally Posted by BravoCompanyUSA View Post
    Spent a good part of yesterday afternoon working with prints and both of our suppliers of carriers.
    The carrier is absolutely in spec per print.
    (just as Mark15 stated very early in the thread)

    Here is the specific info:
    1) As it relates to cutting the forward assist grooves; "RESULTANT NICKS PERMISSIBLE THIS CORNER ONLY", respective to print -pointing at the top end of rail. (The nicks are not allowed to go through the bottom edge.)

    2) Each of our suppliers also supplies this product per .gov contract and per the pictures in this thread the carrier is good to go per Uncle Sam.

    3) If the carrier is made per print, there can NEVER be a resulting bur. Those edges are ground AFTER milling (and heat treat). There won't be a bur if it ground. Feel the metal on that section of rail. It is smoother than the rest of the carrier body. It is a ground surface (^32).

    4) My 6920 looks the same way.


    However,
    if as a owner of BCM gear, if you still don't like the BCG - please send it back for a full refund.



    Thanks,
    Paul
    BCM

    <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<


    For the record, I'd like to publicly say that BCM has awesome customer service - a VERY rare thing found in today's times.

    I'd also like to layout the chain of events on this topic so no one gets a misunderstanding of what took place.

    - I got 2 BCM BCG's last week. They were laying here on the desk still in the bag. I hadn't really even looked them over.

    - Browsing TOS I seen a post about BCM BCG's and started reading it. Someone there was asking about the F/A grooves cut into the rail and others were chiming in if theirs had them or not. Yet others still were not understanding what grooves the OP was even talking about - they couldn't visualize what he meant.

    - I looked at my BCG's and found that one of them had the grooves on the rail. I took pics and posted them on TOS in the thread showing what the OP was talking about. The general consensus in that thread still was swinging back and forth as if the condition was good-to-go or out-of-spec.

    - I called BCM to ask them about it and got the machine. No big deal - they are super busy and it was about 7:45PM-ish EST so I didn't even know if they were in or not, prob not at that hour. I didn't leave a message because I know how voice mails stack up into a mountain. I planned to send Paul an email with the pics.

    - I came over here and posted this thread to ask you guys about it and get your take on it. I know how you guys hold to a high statndard and the TDP, so if I got an over whelming response of "yeah, that is totally normal and not an issue" I'd prob not even sent the email to Paul. But still here it seemed some thought it was an issue and some thought it wasn't. But still, I wanted this groups knowledge on the matter.

    - I sent Paul an email that night explaining the issue and with the pics I posted here.

    - Paul replied the next morning that the grooves would not effect function or result in receiver wear at all, but at the time he felt they were not supposed to drop below the line and said he'd replace it no problem if I wanted. Because he said they weren't supposed to be there, I accepted his offer to replace the BCG. He took care of me with excellent customer service - first class.

    - I seen that this thread had been locked and PM'd site with a general summary of Paul's response and also noted that I didn't want to post any correspondence between me and Paul publicly out of respect and principle - that's not my place to speak for Paul publicly.

    - Site responded that Paul was going to post a statement on the issue.

    - Paul posted his statement that he had reviewed the prints with suppliers and it was concluded that the condition IS in fact in-spec and acceptable. And STILL he offered to replace a BCG if anyone was not happy with it. I will say it again, awesome customer service.


    .....
    Last edited by number9xd; 07-20-09 at 08:50.

  2. #2
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    Taking pics through the bag was difficult due to the light reflecting off the plastic so here is the best I could do without opening it.

    Normal looking forward assist cuts - do not extend down onto the rail ......



    Forward assist cuts extending down into the lower rail.......






    Have you guys ever seen a BCG like this? Just wondering if this is something that is normal or acceptable or if I'm being concerned over nothing.

    .....
    Last edited by number9xd; 07-15-09 at 20:30.

  3. #3
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    The bolt carrier will probably function just fine, but that is a defect.

  4. #4
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    Looks like a factory second.
    From there to here,
    from here to there,
    funny things
    are everywhere.

  5. #5
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    Mine looks just like that. So... it's a factory second? I thought Bravo Company made quality stuff and had strict QC.

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    I wouldn't label that a defect just yet.

    It would depend on the technical data package. I personally can't see that affecting fit, form, or function.
    The print would show the tangent point of the flats in relation to a datum. This tangent point would be spelled out with a tolerance showing the margins acceptable to a given angle. Does this make sense?

    In other words, the angle plus or minus X degrees. This condition may be in or out of acceptable tolerance.

    It may be the rib is at one end of the tolerance, and the flats are at another, creating the condition in the picture.

    Just because I can't see it affecting anything doesn't mean there's no problem. It would be nice to see a print, but I'm not consulted about so many things. LOL

    Mark15

  7. #7
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    Quote Originally Posted by Mark15 View Post
    I wouldn't label that a defect just yet.

    It would depend on the technical data package. I personally can't see that affecting fit, form, or function.
    The print would show the tangent point of the flats in relation to a datum. This tangent point would be spelled out with a tolerance showing the margins acceptable to a given angle. Does this make sense?

    In other words, the angle plus or minus X degrees. This condition may be in or out of acceptable tolerance.

    It may be the rib is at one end of the tolerance, and the flats are at another, creating the condition in the picture.

    Just because I can't see it affecting anything doesn't mean there's no problem. It would be nice to see a print, but I'm not consulted about so many things. LOL

    Mark15

    Huh?
    They just don't belong there. If that is unacceptable to you then send it back.
    From there to here,
    from here to there,
    funny things
    are everywhere.

  8. #8
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    Quote Originally Posted by Ventura View Post
    Mine looks just like that. So... it's a factory second? I thought Bravo Company made quality stuff and had strict QC.
    They do.

  9. #9
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    Quote Originally Posted by hags View Post
    Huh?
    They just don't belong there. If that is unacceptable to you then send it back.
    He's basically asking if that would pass government inspection for Mil Spec, which very few people would be able to give an answer to.

  10. #10
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    Quote Originally Posted by Dunderway View Post
    He's basically asking if that would pass government inspection for Mil Spec, which very few people would be able to give an answer to.
    Oh, I was reading this part of his post:

    Have you guys ever seen a BCG like this? Just wondering if this is something that is normal or acceptable or if I'm being concerned over nothing
    I would say if you're concerned about it then send it back.
    From there to here,
    from here to there,
    funny things
    are everywhere.

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