Recently got a Mossberg 590 AOW, stockless, pistol grip, 14" barrel. With #8 birdshot it's quite controllable, and I don't have much trouble vaporizing pumpkins at 3-6 yards, either by "point shooting" or actual sighting; no complaints after 15 rounds. A single full-blown slug, however, was downright painful to point-shoot, and it was obvious that sighted firing would make my dentist happy.
Methinks this is the only gun that would benefit from a laser sight, or a tight-beam flashlight.
The gun has high cool value...which means it's practically useless. Other than the poster above who actually had a very narrow application for it (need for artillery in very close quarters), don't bother. I got it as it was the only way to pursue the "Class III experience" in NY.