The S&W 3000 was, if I recall correctly, the first shotgun for police, including the very popular 870, to completely solve the dreaded double feed problem with the shell elevator-thingy. I always thought the S&W 3000 suffered from the same problem that has plagued S&W many times over the years. They come up with a good idea, but don't for the foggiest reason know why it is a good idea and worse yet, seem to have no idea how to market that good idea. An awfully large number of S&W guns were "ahead of their time."