I remixed this to use a X-Shot Skins Menace since I had one already. Assembly should be straight forward. Be sure to not overtighten the screw that goes through the trigger otherwise it'll bind up.
For the trigger I recommend printing it with atleast 4 walls. No supports are needed.
The author remixed this model.
Modified it to use X-Shot Skins Menace internals instead of the Micro.