G21SF - size of front sight nut? [Archive] - Glock Talk

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pm666
01-04-2010, 13:07
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

Butch
01-04-2010, 13:17
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.
http://img.photobucket.com/albums/0603/ButchG17/Glock%20pics/Frontsighttools-1.jpg
http://img.photobucket.com/albums/0603/ButchG17/Glock%20pics/Frontsighttooltips.jpg

pm666
01-04-2010, 13:25
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.

http://glockparts.com/store/image/gh7p/Accessories_Glock_front_sight_tool.jpg

Butch
01-04-2010, 14:00
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.

http://glockparts.com/store/image/gh7p/Accessories_Glock_front_sight_tool.jpg
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.

stengun
01-04-2010, 16:11
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".

pm666
01-04-2010, 23:14
Are these front sight nuts made of metal or plastic?

Butch
01-05-2010, 01:36
Are these front sight nuts made of metal or plastic?
They'd be steel.

http://img.photobucket.com/albums/0603/ButchG17/Glock%20sights/DSC09532.jpg

pm666
01-05-2010, 07:19
But the sight itself is plastic, correct?

Butch
01-05-2010, 11:01
But the sight itself is plastic, correct?
Yup, the standard sight (shown in the pic above) is polymer, night sights are steel.