The Phaser model that is the parent looked good but also looked like a support nightmare. I resized it a bit and split it so you could print the halves and glue them together.
Print both halves. Glue together.
There are three files: one plate and then both sides separate.
Watch out for warping! The barrel doesn't have a lot of contact area and if it warps it won't fit together well. I may try printing with a brim.
The 50% sized print did pretty well on fitting together.