need some help on this :?: well 2 questions? 1. i want to get a heat shield for my flex 590 tactical 20", but only can find them for the 500/590(non-tactical). so are they pretty much the same and are most accessories for the 500/590 adaptible to the flex 590 tactical. 2. i know mossberg has a metal heatshield (about $35), but i have also come across 3rd party makers of a composite material heatshield (about $19). is one better :?: or are they just trying to put a spin off mossbergs shield. anybody here use either one, and do they really fuction as intended.