If you have one of these Hasbro Titanium X-Wings, you probably have at leas one broken or missing cannons. This is made to pressure fit so you can easily replace if needed. If you do find you want to glue in place, I recommend a slight touch of Elmers Glue so you can remove if needed.

I recommend printing the cannon on its side with slot pointing up and with supports. I used organic supports and suspended it a couple millimeters above the surface to allow a nice support beneath the entire object.