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 received a SIG Romeo that didn’t come with the screws, and didn’t feel like paying 10$ for 2 screws, so sprung for this kit instead. Comes with a ton of different screw sizes that will fit most red dot sights, but you may want to look up the manufacturer specs of what size and thread you need for your particular optic. All screws are neatly labeled in their own pouches, and of good quality. The ones I needed were an exact match for my optic and they are holding strong. Also a plus that they come with pre applied thread locker. They also include an extra screw of each type in case you end up losing once which is nice!

Great to have. Great price too.

This was a lifesaver find. I lost a couple of screws for some red dot sights I have, and those screws are typically only found at specific shops. This purchase allowed me to determine the size I needed, and gives me plenty of extras for future issues.

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.

Great little screw kit! It has many sizes and works great.

Great assortment of screws higher quality than the ones that came with my sig red dot from the factory

Great quality

The media could not be loaded. Disappointed. At $18 (time of review) and a lot of varying screws, I thought I would have at least one RDO combo that would work. Nope, even the size I needed did not fit right or was not long enough on three RDOs mounting the adapters to different slides and different RDOs to different adapters. I ended up using the screws left over from other optic mounts like I usually do. I'd rather look for specific screws to mount critical duty-type optics. I cannot recommend these as I could not find any to work with my applications.