The fenn rabbit is a better trap than the mk6, the shape of the jaws have alot to do with it IMO. It also kills squirrels stone dead with better results too, though they are not legal to use on squirrels. I would say that it would be almost impossible to use a DOC for rabbits. The legal box makes this trap a white elephant. Which is a shame.But I have no doubt that it would flatten the biggest of rabbits with ease. Squirrels do not even flick their tail. Its a superb trap, just restricted by the foolish legislation that some fool deemed neccessary.
I've loads to do yet, but i'm a bit too bus