I have used the TruGlo Magnum Gobble Dot adjustable sights in the past that are similar to the Williams sights and liked them a lot. I've since moved to a Burris Fast Fire 3 on my 20 gauge and an Eotech on my 12 gauge. I still have a 12 gauge with the Tru Glo sights on them but hardly carry it anymore because I find the red dot to be very easy to get on target for me. I will suggest if you go with a red dot not to get a "tubed" model but more of the holographic style like mine. Some may have good reviews of them but I tried one and didn't like the "tunnel" view of looking through it at close ranges, but that's just my opinion.