[ned69]

I recently did a front sight upgrade, and.... my first trip to the range lost the original screw and nut.

This is a 1st gen Sub 2000 in Glock 9.

Is this available from KT, or should I just try replacing it with a nut and screw from the hardware store.

Note to self.... be sure to use some blue Loctite!

Thanks.

 

[3wbdriver]

I believe it's a 4-40 screw and it should be a self locking nylon insert nut. But you can just as easily leave it out. Just make sure your adjusters are snug against each other. Not torqued, just nice and snug.

 

[tjps]

The original hardware is 5-40 threads. The nut is a small pattern nut. You will not likely find this hardware in your local home improvement store. 4-40 hardware is more common than 5-40 and should work as long as the hex on the nut is 1/4".
I do not agree that using just the adjustment screws to hold the front sight in place is a good idea.