That mount that I never intended for paintball (it was actually made for a dash cam) turned out significantly stronger that I thought:
And it still pops on and off quite easily, no cam levers or screws (aside from the camera screw itself) or whatever.
It's not like firearm strong, and I don't know how this will hold up against heat + paint fill, but if you're interested, the CAD file is here:
I printed mine with black Sainsmart flexible TPU. Ninjaflex will probably be too soft, but the black is optional. You could go with "tactical orange".