Monstrum Red Dot Screw Kit | Includes M3, M4, #4-40, #6-32, #6-40, and #6-48 Screw Types | for Compatibility Across red dot Makes and Pistol mounting Platforms

I've been playing a guessing game w/ screws since I got my firearm optic cut.. Finally a package w/ what I needed! Great quality also! If you have a K-Cut from Glockstore, this is what you want...

Finding the correct optic mounting screws for any given application can be a challenge. This compounds itself if you swap optics between various manufacturers makes and models. This kit, so far, has covered everything I need for mountings on Sig, Glock, CZ, HK and various custom slide manufactures. Pays for itself in time saved hunting around. A+

very good quality. a good purchase

Amazing products for the price

Pluses : price and completeness. Minuses: Screws themselves are the same screws provided with Holosun optics. They almost look like they are metal injection molded instead of cut from rod stock. Would absolutely trust on regular mounting, but might look at sideways if it’s on a pistol slide. If the slide had great recoil abatement, and the fit fit tightly, I’d probably still rock it on a pistol slide. If it’s just the screws securing it that would be a no.