I don't know if they make adjustable sights for Glocks or not, but the front sight can be pulled out with a pair of pliers and replaced with new night or high visibility sights, just make sure to use lock tight on the threads of the front sight nut. The rear sights are dovetail so they can be pressed or tapped out and back in, just go out and in from the same side, I replaced my stock sights with night sights, and usually only shoot from 10-35' so I have no need for adjustable sights. My local gun shop will usually put new sights on your gun while you wait if you buy them there.
Due to the rising cost of ammo
DO NOT expect a warning shot.
I carry a Glock because 40,000 cops can't all be wrong.
If your not always prepared Your never prepared-Woodsman