Looks like my Mask HD might could stand cleaning every 500 rounds or so. I did the CLR dunk for 7-8 hours on the SS baffles (not the body or endcaps) and all the back gunk just wiped right off with shop towels. I used the little M&M candy canister you get at the walmart checkout. Just the right size for all the baffles to slide in. Only need maybe 4-5oz of CLR per cleaning. Saw the process on an online video.
