I recently picked up a Glock 21 Gen 2 (45 ACP). I need SOMETHING to replace the adjustable rear sight. It's flimsy, sticks out beyond the rear of the slide where I keep snagging it, and on top of that the little plastic adjustment screw appears to be broken. Does anyone - maybe who replaced their sights - have an old OEM rear fixed sight (or other, just not the Glock OEM adjustable sight) they would be willing to part with? I want to get this thing off of here before I pop it off altogether. Feel free to post or PM me. I'm in the Upstate along the I-385 corridor. Thanks in advance.