So work on the Laptop Gun prop continues. This is an attempt at the grip, which needs to slide up and in a "V" shape. Originally I was thinking of having it slide up and down with some sort of tube (like a trombone slide) but I decided to get all clever with some roller chain. It works OK but it doesn't move it nearly as much as it needs to, and is a bit crooked. So I'll probably go back to the slide tube idea.