Originally Posted by
WDR
Pics? Were the screws originally installed with a torque wrench to a proper torque (something under 15 inch-lbs)? I assume this is the screws securing the sight to the plate, and not the plate to the slide? Those may be a challenge too...
If you have a steady hand, a Dremel with a small cut off wheel, and nerves of steel, you may be able to cut a cross slot deep enough into the heads of the screws to use a regular screwdriver... but that's pretty risky. RMR screws are countersunk below flush, which would make cutting a cross slot difficult. A really good gunsmith may be able to drill/mill the heads of the screws out enough to remove the sight without damaging it. I imagine one of the slide milling houses would possibly have some experience with such work.
Sorry amigo... no easy options here.