close

Privacy guaranteed - Your email is not shared with anyone.

G21SF - size of front sight nut?

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


  1. pm666

    pm666
    Expand Collapse

    Joined:
    Feb 28, 2009
    632
    0
    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
     

    Wanna kill these ads? We can help!
  2. Butch

    Butch
    Expand Collapse
    RetiredDinosaur
    Millennium Member CLM

    Joined:
    Dec 17, 1998
    11,099
    80
    Location:
    Minnesota
    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
    Expand Collapse

    Joined:
    Feb 28, 2009
    632
    0
    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
    Expand Collapse
    RetiredDinosaur
    Millennium Member CLM

    Joined:
    Dec 17, 1998
    11,099
    80
    Location:
    Minnesota
    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
    Expand Collapse

    Joined:
    Nov 20, 2004
    2,226
    2
    Location:
    Bugtussell, AR
    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
    Expand Collapse

    Joined:
    Feb 28, 2009
    632
    0
    Are these front sight nuts made of metal or plastic?
     
  7. Butch

    Butch
    Expand Collapse
    RetiredDinosaur
    Millennium Member CLM

    Joined:
    Dec 17, 1998
    11,099
    80
    Location:
    Minnesota
    They'd be steel.

    [​IMG]
     
  8. pm666

    pm666
    Expand Collapse

    Joined:
    Feb 28, 2009
    632
    0
    But the sight itself is plastic, correct?
     
  9. Butch

    Butch
    Expand Collapse
    RetiredDinosaur
    Millennium Member CLM

    Joined:
    Dec 17, 1998
    11,099
    80
    Location:
    Minnesota
    Yup, the standard sight (shown in the pic above) is polymer, night sights are steel.