I've bought into the notion that heat shield on a shotgun was kind of silly, extra weight and not needed. Well, when you crank off about 75 rounds of 00 in a rather short amount of time for practice, the barrel tends to get a bit hot (understatement). More than a few times I've accidentally grabbed it or had it brush up against my arm or leg. Not to mention I can't put my shotgun away right away in the egg crate foam hard case I have after a session for fear of melting the stuff. I have an 870 with an 18.5" police barrel with rifle sights. Does someone make a decent heat shield for that type of barrel? Much appreciated!