if you could, post a couple of pictures of the mounting hole and let us see what you have. maybe we can help you with a way to make it work. at 22 inches the barrel is plent long enough, because mine is 21 inches and it has the 18 round magazine tube.ok, thx.
I'm mostly wanting to convert a short feed tune to the long feed tube.
The barrel is 22" so it is the long barrel.
A guy at one of the nation repair centers said that the parts would interchange but the hole for mounting the tube stay might not be in the right place.