dragnracer1, if you look at the cased set, you can see a round sleeve like thing with a screw in it on the 410 barrel. That was the original way of mounting the barrel. If you click on the picture of the boxed set it will blow up to full screen. Look close at the forearm, it looks like there is a crack in it. I believe that was one of the problems of the original set up, it was hard on the forearm. The lug on your barrel that snaps in like the rifle barrel is a modification, Joe.
