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G21SF - size of front sight nut?

Discussion in 'Sights, Optics and Lasers' started by pm666, Jan 4, 2010.

  1. pm666

    pm666

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    What is the size of the front sight nut on a G21SF? Also, if I buy a thin-walled socket, will that allow me to take it on and off? Is this front sight be moved (adjusted)?

    Thanks,
    paul
     
  2. Butch

    Butch RetiredDinosaur CLM Millennium Member

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    The front sight is fixed into place, adjustments are done with the rear sight. The space around the screw head is small, and a special sized driver is needed to get at it.

    The top one is made specifically for the purpose, the bottom one is a regular nut driver that I altered to work on the steel/night sights, it may not work on the new style polymer sight screw.
    [​IMG]
    [​IMG]
     

  3. pm666

    pm666

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    Hmmm...I found this one, supposedly made by Glock. However, the description says it is 5/16, not 3/16. I don't want to buy it if it's not the right one.

    [​IMG]
     
  4. Butch

    Butch RetiredDinosaur CLM Millennium Member

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    I've not had one of those tools yet, but it does appear to be made by Glock for the front sight screw. I'm near positive that it's 3/16ths, the 5/16ths thing must be a typo. I expect it would work just fine.
     
  5. stengun

    stengun

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    Howdy,

    I made my own out of a 3/16" nut driver that I bought at a pawn shop for $2.00. I put it in a lathe and turned it down and then faced it off to remove the internal bevel.

    It works great.

    Paul

    P.S. the size is 3/16".
     
  6. pm666

    pm666

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    Are these front sight nuts made of metal or plastic?
     
  7. Butch

    Butch RetiredDinosaur CLM Millennium Member

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    They'd be steel.

    [​IMG]
     
  8. pm666

    pm666

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    But the sight itself is plastic, correct?
     
  9. Butch

    Butch RetiredDinosaur CLM Millennium Member

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    Yup, the standard sight (shown in the pic above) is polymer, night sights are steel.