I have always looked at most things as I look at cars, there;s the crowd who'll drive a 4 door with Hubcaps and then there are the Hot Rodders who want individualisation.
I for one have been a Hot Rodder all my life and even if it's just a set of "Wheels" I change my vehicles! My guns too!
I can't get a picture up but my Tatical H/D gun is a Mossberg/Wards 550 with a chopped bbl and a sli[ pn recoil pad. Nothing extra just fast handlinng with a cylinder bore for shot spread. KISS.
There is seeminglly no end to the add-ons I could buy though! You may take it as far as your heart desires!