Not a drop in item - TRYBE Defense Glock 43/43X 9mm Pistol Slide - Version 1

Looks great, fit onto my 43x is excellent with great lock up on barrel. Cycles as it should dry and live fire. My issue came with when I went to install a holosun 507k green dot. When I removed factory screws holding the MOS plate in place I noticed the tap job was AWFUL. The groves are just barely deep enough into metal to allow the factory screw to bite into some material. I tried several of the same size screws that I keep in my shop- none of which would thread into the hole. Only the factory provided screws would fit.