It seems the hex screw head is not enough exposed to get a good fit of my TRUGLO front sight tool. I am using a lock wrench as well. I believe the sights were original but I bought the pistol used. The sights are tall all black sights, hence the reason I’m trying to replace with Trijicon night sights. I’m worried about stripping the screw head. Does Glock use loctite on OEM factory sights. Any help? I heard someone suggest in a previous post to hear the slide/screw to help loosen it if it has been loctited.