i have a mossberg 500 "persuader" i purchased the ATI cheap ass universal heatshield. i put around 50 rounds thru the gun, and yeah, it kept me from burning myself on the portion of the barrel that it covered. horever it also slid forward after use. 1st time around i was using 00 and 000 buck shot. so i refit it, wrenched it down about as far as i could seem to get it. used the cheap bird shot from walmart 2nd time around, which dramatically reduced recoil. and the same thing happend, slipped forward. perhaps a better quality heat shield is in order. but all in all, it looks neat. it does serve a bit or a purpose. but its not entirely necessary.