About this 3D model
I designed this gun using fusion 360, as a fun, but classic laser pistol. This gun makes me think of Marvin the Martian. It is printed in 3 parts (handle, body, muzzle.) The pin is optional, I fount that a friction fit was OK for me. I put some tape around the muzzle for a tighter fit, but glue would certainly work as well. I did use supports for bot the handle and body prints. Everything was printed at a 200 micron layer height in orange PLA.