Swampfox makes great dot sights for your pistol. You have a slide adapter plate dovetail mount or custom gunsmith cut. Putting them together? Its gotten complicated. Swampfox has your back with the Red Dot Screw Pack containing 16 four-screw sets of various thread pitches and lengths. When you run into mounting trouble these small-head T10 screws are the most likely to be the "problem solvers" needed to attach Kingslayer Liberty Justice and Sentinel to those slides and mounts. Five sets of Do-It-Yourself screws (6-32 4-40 6-40 M3 M3.5 M4 pitches) deliberately feature a too-long-for-everything 14mm effective thread length. If all else fails grab your Dremel or belt sander and trial-and-error cut them for a truly custom fit.