Nowadays most of the Games Workshop models and minatures comes with multi parts weapons options, like recent tanks and valkyrie. Usually I would try to convert them so that these weapons are interchangeable, all these with the hope of those tiny super magnets. Will showcase my new tanks and valkyrie with these options when I start working on them. Now is still the Cities fever. Target to complete my end Sept.
For my Cadian Heavy weapon squad, I did not glue the weapons, I am able to change between heavy bolters, lascannon and autocannon. As for the missile launcher and gernade launcher, they are of different structure, not really possible to make it interchangeable.