Rubber Gun

This is a rubber gun I designed for my nephew.
The parts are for half the gun, you have to mirror them to print the other side.
The parts are divided into two categories, "Mechanism" & "Gun" parts.
"Mechanism" parts handle the guns functionality and "Gun" parts are for the aesthetics.
I designed it this way so I can later build another gun with the same mechanism or this gun with another mechanism.
Although there are pins to hold it in place, you have to glue the mirrored pieces to have a working gun.
In the images there is an illustration of the mechanism. With "red" there is the rubber you have to use to make it work.
The "red" rubber in the front part is used to make the "outer part" move back and forth (for added realism).