First of all: No, I doubt either of them will do it. At its core, Portal is a game, and that’s its main property, so && will probably produce a portal gun prop or something along those lines. || will probably output something like “Nerf: The Video Game” if you know what I mean.So, how would you go about alchemizing a Portal Gun? It’s such an abstract concept at its core, a toll that opens transdimensional gates. I think it might take several steps. If you would try to make it from objects located outside of the game, I would say:Door && Wifi Relay = Wormhole RelayWormhole Relay && Nerf Gun = Portal GunOr maybe even more complicated.However, if you are already in the game, then I am pretty sure many other possibilities will be available to you.Roxys Red Rifle comes to mind. You could possibly use Fenestrated Walls, or something Skaia related to make your Portal Gun.It’s a complicated concept.