PTR 9KT roller bumps - Page 2
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Thread: PTR 9KT roller bumps

  1. #11
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    Quote Originally Posted by Gorrillaznyc View Post
    Would you mind uploading pictures of the roller marks, I am aware of them and how they are caused, just havnt seen them for myself

  2. #12
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    As for fixing the dents yourself it is possible with a press to do it with a few blocks of steel, one would need to be a perfect and square fit inside the reciever between the 2 rails, would have to be snug to be sure you did not push it out of spec when you flatten the roller bumps, then use steel block on the top and the press. You would need to make a T of steel for the underside of the reciever and other rail. If you have a good shop and metalworking skills you could do this. BUT if you are not careful you could make an expensive mistake. The press has power to stretch and squeeze the flat out of spec so do not John Henry it. Just a gentle squeeze that will push the dent back, would even put blue painters tape over the area to minimize possible finish marring from the steel pusher blocks. Honestly the best safest way would be to use the the mandrel that RTG Parts carries that slides into the reciever has exterior peices that fit into the rail slots and trues up the shape of the reciever bringing it into specifications. But this is an expensive builders tool and you are very likely to mar the finish on the reciever in the process.

    Each method has its drawbacks but it can be done
    Last edited by gulfstategaurd; 09-15-2019 at 03:57 PM.
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  3. #13
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    Quote Originally Posted by gulfstategaurd View Post
    As for fixing the dents yourself it is possible with a press to do it with a few blocks of steel, one would need to be a perfect and square fit inside the reciever between the 2 rails, would have to be snug to be sure you did not push it out of spec when you flatten the roller bumps, then use steel block on the top and the press. You would need to make a T of steel for the underside of the reciever and other rail. If you have a good shop and metalworking skills you could do this. BUT if you are not careful you could make an expensive mistake. The press has power to stretch and squeeze the flat out of spec so do not John Henry it. Just a gentle squeeze that will push the dent back, would even put blue painters tape over the area to minimize possible finish marring from the steel pusher blocks. Honestly the best safest way would be to use the the mandrel that RTG Parts carries that slides into the reciever has exterior peices that fit into the rail slots and trues up the shape of the reciever bringing it into specifications. But this is an expensive builders tool and you are very likely to mar the finish on the reciever in the process.

    Each method has its drawbacks but it can be done
    Thank you, will look into getting this done.

    As far as spotting the roller bumps, it's definitely one of those "once you see it, you can't unsee it" kind of things...
    gulfstategaurd likes this.

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  5. #14
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    Quote Originally Posted by rickj1nd View Post
    You need to pick up a #28/80° LP for sure.
    Appreciate the info on the forums like this. Just bought one off RTG.

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    Quote Originally Posted by napt0wn View Post
    Appreciate the info on the forums like this. Just bought one off RTG.
    Everyone starts somewhere. HK roller locked firearms can be a confusing thing compared to other designs at first. (Welcome BTW)

  7. #16
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    Quote Originally Posted by rickj1nd View Post
    Quote Originally Posted by napt0wn View Post
    Appreciate the info on the forums like this. Just bought one off RTG.
    Everyone starts somewhere. HK roller locked firearms can be a confusing thing compared to other designs at first. (Welcome BTW)
    Thank you! Realizing how much I don’t know about roller lock. Whole different ball game than AR’s for sure.

  8. #17
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    Where can one find the correct locking piece for suppressed use?

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    Quote Originally Posted by DsGrouse View Post
    Where can one find the correct locking piece for suppressed use?
    hkparts.net

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    Since it’s a popular discussion, I have the 9CT. Does the full size require a different one? Which locking piece is correct to run suppressed on the 8.9” barrel?

    ETA: I did search the forum and found the info on the different locking pieces, but everything I found seemed to center around the K models. Couldn’t find anything on the full size.
    Last edited by GTS197; 09-16-2019 at 03:09 AM.
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