Man, that had me going. All I've ever wanted is to kill some living dead. I know a guy with a real zombie contingency plan, in case there's ever an outbreak of zombies.
I can't imagine having the money for one PS3, let alone an extra to take apart for a phaser. Don't get me wrong, its cool and all, but don't you think you'll get a little more functionality out of the laser when its in a game system?
It is a kerosene powered railway signal. It has different reflectors to signal whether a train is coming or going, and a couple of knobs at the bottom to control how bright the flame is. Judging by the two screw mounts on the top, I'd say it was meant to hang on a wall, probably at the station itself.