I designed a modular universal handgun holster which can be mounted on molly and belt. For people who shoots more than 1 handgun during each range trip and will draw them from a holster, buying a lot of gun specific holsters and swapping them on gears is a big hassle. Especially for rare guns which often requires custom made holsters. My universal holster can accommodate a wide range of handguns even if they have light, weight, red dot, or suppressor attached on.

Pros:
Mount on molly and 1.5"belt
Compatible with multiple handguns
Compatible with light, weight, red dot, or suppressor
Active retention
Cons:
Rattles slightly
Not compatible with frame mounted red dot, only slide mounted red dots are compatible

Anything with less than 1.46" thickness and 3.23" width will fit.

2023/02/13 Update:
Added a larger holster which is compatible with Chiappa Rhino, Beretta 92X performance, Pardini GT9, 2011. It has larger internal volume and side cutout to accommodate larger safety levers.
Added step file.