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Thread: DDM4 Upper meets Bushy lower.

  1. #1
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    DDM4 Upper meets Bushy lower.

    Recieved the upper today. Fantastic fit and finish. #3 for me. This time however I put it on a Bushy lower. It is less than tight for my comport level. Accu-wedge? Or just get a DD lower and move on.
    I have always hesitated using different manufacturers for this reason and preference of continuity.

    Any input is welcome. Needless to say it's going to the farm in the morning for a prelim.

    -C

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    If the fit is loose enough to cause function issues,then yeah I'd say its a problem.Otherwise I'd let it rattle.Common wisdom is to avoid the wedges or o-ring fixes.If you want to try and tighten it up a bit,then get a set of Armalite NM pivot and take down pins and see what that does for you.
    Otherwise if you have some other lowers try swapping uppers around to get the best fit between the bunch.Pretty much all my rifles are put together with mixed manufacturers receivers.Some fit kinda tight and some are kinda loose,same goes for the factory built guns..
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  3. #3
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    Even rifles from the same manufacturer can and will be loose (hence the perceived need) for Accuwedges. The play between an upper and lower does not affect accuracy or function so I would forget about it and shoot the weapon.

    Quote Originally Posted by hank2165 View Post
    Recieved the upper today. Fantastic fit and finish. #3 for me. This time however I put it on a Bushy lower. It is less than tight for my comport level. Accu-wedge? Or just get a DD lower and move on.
    I have always hesitated using different manufacturers for this reason and preference of continuity.

    Any input is welcome. Needless to say it's going to the farm in the morning for a prelim.

    -C



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  4. #4
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    Well, all good and thanks. Never understood the wedge thing anyway. But, first time iv'e ever married different urg/lrg's. I have 10 hrs of range time at the farm so we'll put it through the paces. I also have one more lonely lower I can sub too.

    I'll report later. I really appreciate valuable insight.

    V/R
    Colin
    Last edited by hank2165; 08-18-10 at 23:00. Reason: Length

  5. #5
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    I just mated a complete BCM 14.5 middy upper to my BM lower and it seems no worse then when I had a BM upper on it.

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    Quote Originally Posted by Iraqgunz View Post
    Even rifles from the same manufacturer can and will be loose (hence the perceived need) for Accuwedges. The play between an upper and lower does not affect accuracy or function so I would forget about it and shoot the weapon.
    It affects accuracy a little bit. Feamster demonstrated this in Black Magic.

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    I would love to see some real proof of this. I am highly doubtful. Obviously if the upper is rocking and rolling all over then I would be concerned. But, this most likely isn't the case. We are talking about a little play.

    Quote Originally Posted by Schulze View Post
    It affects accuracy a little bit. Feamster demonstrated this in Black Magic.



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    Quote Originally Posted by Iraqgunz View Post
    I would love to see some real proof of this.
    I did cite my source.

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    Sorry, I don't have his book. I also know that other people have tried Accuwedges and other assorted garbage and none of them have reported an appreciable difference.

    You'll have to excuse me if I don't believe everything that it published in some book.

    Quote Originally Posted by Schulze View Post
    I did cite my source.



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    Quote Originally Posted by Iraqgunz View Post
    Sorry, I don't have his book. I also know that other people have tried Accuwedges and other assorted garbage and none of them have reported an appreciable difference.

    You'll have to excuse me if I don't believe everything that it published in some book.
    He has pictures.

    iirc, the method he used was the JB Weld on the upper receiver method.
    Last edited by Schulze; 08-19-10 at 01:38.

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