Put the small one in the Bulldog tonight. It fit great in the mantlet so that it can move up and down with the barrel. Remember if you are going to put one in that this will just get you in the area. These guns aren't accurate enough to bother spending the time to try to boresight them at a certain range

I was going to mount it flush, but thought that since it is for a 10 year old and not going for historical accuracy I would leave it out a bit to look like a gun barrel.