I like cartridge traps, here's one I did on a low wall. Notice that I installed it as far forward as possible, to permit placing the sling swivel stud as near the center of the belly as possible. The width of this particular trap precluded having its cavities at the rear.
Next one will be a different trap configuration and will be reversed, just to see what it looks like in that position. IMO the sling mount should be as close to center of the belly as possible for best carry position.
Regards, Joe
