I liked the original design a lot and I used it for a while with no major issues, but I had some thoughts of my own.
while the mounting system was sleek and hidden I had trouble getting the parts to print well and also had issues with the magwell shifting around.
so instead of the 2 small printed parts, I opted for 2 melt in threaded inserts. If you are familiar with any of my other designs it is the same M5x6 grub screw and threaded insert.
I included the SLDWKS File as well as the STL if anyone wants to continue changing or tuning designs.

(Kwongkan this next part is for you)
If you see this in your notifications it would be great if you could send me the Solidworks File that includes the design tree. my work to modify the STEP file inside the Solidworks file was very jumbled and messy, id like to redo my changes in a more streamlined way and with more Parametric Modeling in mind.
Thanks.