Now that I have my Mossy in hand it is time to deck it out properly. One of the first things I want to put on it is a heat shield. It is a 500 Persuader with a FAB Defense PR-MO Tri-Rail forearm, 20" barrel. What heat shield would best fit it? I see one on amazon.com called a Mossberg Heatsheild Parkerized Moss 500/590, sold by American Tactical, that has good reviews but I don't know how compatible it is with the forearm I have. Any of you good folks have some wisdom to share with me?