Proton Pack Thrower Trigger parametric

UPDATE 2/12/17. This part was used in the Ghostbusters Station 6 fan film. Check it out on youtube at https://www.youtube.com/watch?v=RHMUsQqLmRg

A 3D printable version of the trigger assembly mounted on the end of
the proton pack thrower.

The trigger fits to the ring with a #2x1/4" screw.

The trigger is a fixed size and the ring.stl file is for an acrylic tube of 22.5 mm.

Edit the openscad file to create a ring of different size.