Ok guys i need help

Discussion in 'Auto & Semi-Auto Discussion' started by kryptar19, Mar 26, 2013.

  1. kryptar19

    kryptar19 New Member

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    So I'm going to put a Troy battle rail on a Bushmaster AR10, and I have ran into a snag. On the gasblock the "pins" are actually rivets so a punch will not work right off the bat. So I used a buzzed the heads off of the rivets on the left side of the block, they still won't punch out.

    I'm at a loss here.. Anyone else had this problem??
     
  2. mountainman13

    mountainman13 New Member

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    Have you applied heat to the gas block?
     

  3. kryptar19

    kryptar19 New Member

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    Yes, I figured that's what it needed. Didn't work...
    This is so frustrating! I've never had this problem before.
     
  4. mountainman13

    mountainman13 New Member

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    Yeah that's a tough one. Did you try heating the rivets? Lol
     
  5. Sgt_Skrb_25

    Sgt_Skrb_25 New Member

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    I'm about to do the same thing for a friend here in an hour, I let you know how it goes.
     
  6. mountainman13

    mountainman13 New Member

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    Any reason you can't drill them out?
     
  7. kryptar19

    kryptar19 New Member

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    Tried, my titanium coated bits won't bite into the rivets. Lol
     
  8. mountainman13

    mountainman13 New Member

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    Have a pneumatic press? Lol
     
  9. kryptar19

    kryptar19 New Member

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    I do not. I can't find anything on YouTube on this problem.
     
  10. mountainman13

    mountainman13 New Member

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    Yeah its not an issue I've run into.
     
  11. Sgt_Skrb_25

    Sgt_Skrb_25 New Member

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    I just did my friends and I got lucky they punched right out. I grinded them down flat to the same level as the sight base, and got the right size punch, and it worked. Did not put a nick on the barrel.
     
    Last edited: Mar 26, 2013
  12. gearhead396

    gearhead396 New Member

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    I rune in to the issue when I work on cars and some times I have to drill them out I don't know if you can do that on a ar but just my .02 cents
     
  13. kryptar19

    kryptar19 New Member

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    You grind em off on both sides??
     
  14. MisterMcCool

    MisterMcCool Well-Known Member Supporter

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    Do you know anyone with a hydraulic press?
     
  15. Sgt_Skrb_25

    Sgt_Skrb_25 New Member

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    I just grinded of one side and I can barely make out where the stem of the rivet was. I used a punch half the diameter of the rivet head, hoping it would fit. I got lucky and it popped out. I have never broken down a front sight base like that, I can't believe they drill out the barrel for the rivets. That's why I think they are garbage. I have only built with free float quad rails and rail mounted sights. Can you even make out where the grinded of stems are?
     
  16. kryptar19

    kryptar19 New Member

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    No. It's the damnedest thing. I even tried a titanium bit on a high speed dremel and it would just spin on the dimple I made, didn't even bite into it.

    I'm at a complete loss for what to do...
     
  17. unclebear

    unclebear New Member

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    this is gonna sound stupid...

    Have you tried using any liquid wrench or WD40?
     
  18. MisterMcCool

    MisterMcCool Well-Known Member Supporter

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    You really need a hydraulic or pneumatic press, but since you don't have access to one... If you are going to try to drill them out, you could try a diamond coated, glass and tile bit.
     
  19. kryptar19

    kryptar19 New Member

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    Y'all think I should call Bushmaster and see what the deal is??
     
  20. MisterMcCool

    MisterMcCool Well-Known Member Supporter

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    I couldn't change out the gas block on my Bushmaster AR-15 for the same reason. I took it to a gunsmith and he couldn't do it without a press. He said the barrel was coated after the block was installed and that coating is super strong. You have to break the seal of that coating around the rivet and it takes a lot of pressure to do it. I think it is manganese phosphate.
     
    Last edited: Mar 27, 2013