wrong sight for that dovetail cut.
a correct sight would be just as wide or very very very very very slightly larger at the base than the dovetail cut.
sights are fitted by using sandpaper to remove metal off the bottom of the sight. not the edges. you may need to do the edges but that is a last resort. you only sand the underside until the sight slides in 1/4 of the way into the dovetail freely. then use a sight pusher to get it centered. if it stops or feels like it hit a wall it needs a bit more file work. a properly fitted sight will stay in place via friction. some have set screws. some use red locktite
"Gun control: The theory that a woman found dead in an alley, raped and strangled with her panty hose, is somehow morally superior to a woman explaining to police how her attacker got that fatal bullet wound." L. Neil Smith
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Last edited by JonM; 09-08-2013 at 01:13 AM.