Demolition Rance featured that gun about a month ago:
It seems like a good villain gun. You know like when the villain does all these elaborate things to kill somebody even though most of them don't seem necessary and there's really no explanation for them. Like when Charles Bronson rigged the gas line in the kitchen stove and then replaced the tea bags in the cupboard with ones of the same brand laced with a sedative, and then put a small explosive in a book on the shelf, so when the guy in witness protection came home to the safehouse and made tea he would trigger the stove to leak gas, but not before he had fallen asleep. Then when the apartment was full of gas, Bronson would shoot the book from his hotel room across the street and the whole apartment would blow up. That was awesome, but I don't know why any of it was necessary. That's how this gun is. He could have just shot the guy, or poisoned him, or blew him up, but he did all three.