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Gas tube roll pin installation question

Discussion in 'Gunsmithing and Repairs' started by ARperson, Dec 3, 2004.

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  1. ARperson

    ARperson Member

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    So I'm putting together a new AR and I'm having some trouble installing the gas tube roll pin. It's more of a finesse thing. Can't seem to keep it in place and hammer the little dude in. Even enlisted the help of another person to hammer while I held in place. No joy.

    Anybody got any suggestions on this? Or am I relegated to simple trial and error? Thanks.
     
  2. Jim K

    Jim K Member

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    Assuming the hole and the pin are the right size, you can taper one end of the pin a little so it goes in more easily. The real answer is a roll pin punch, made specially for use with those pins. Check with Brownells.

    Jim
     
  3. RJ357

    RJ357 Member

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    Also, the front sight housing should be resting on something solid - heavy vise, block of steel, etc. The more solid it is, the easier it will start.
     
  4. Amish_Bill

    Amish_Bill Member

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    Trick 1 - Use a pair of pliers or needlenose to slightly crimp one end in. NOT flatten it, but close the split in the roll to reduce the diameter.

    Trick 2 - Put a little CLP or (insert favorite non-sex lube here) on the roll pin. This will ease the insertion of all the pins in an Ar-15 kit.

    Trick 3 - hold the pin in place with a pair of needlenose or hemostats and lightly tap it in with a tack hammer.
     
  5. ARperson

    ARperson Member

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    Got it, used the pliers trick, also figured out I was using a roll pin punch just one size too small to work well :eek: , went with the next size up and she went right in.

    Thanks for the help.
     
  6. JNewell

    JNewell Member

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    The roll pin starter punches from Brownells are really helpful, especially with the small pins, such as those in the A1 rear sight and the gas tube. Worth a look if this is more than a one-time job.
     
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