Mr. Armstrong. I think that you are right. It is a good gun. The only point I was trying to make is that it is not a simplest weapon to use.
I never thought of a pump shotgun as being difficult to use. The whole process is quite simple. It can be screwed up, but that isn't a function of the complexity of the mechanism. It is a function of the shooter not completing a very simple task.
With that said, the use of slugs has nothing to do with the complexity of the platform.