The problem with single triggers, is that the switch from one barrel to the next is done by recoil. There is a small pendulum in the trigger mechanism that the recoil pulse swings and sets the trigger for the second barrel. A fail to fire results in a non-functional weapon that you have to bump the butt on the ground or manually transfer to the second barrel with the barrel selector. Two trigger guns you just pull the second trigger. Two trigger shotguns are simple, basically two separate shotguns built as one neither barrel dependent on the other. You can fire either barrel at will.
Last edited by erich; 12/07/22.
