I picked up a stainless gas block for my new build. Its is shiny and I want to bead blast it to matte it doen like the barrel and brake. I need to check work tomorrow, one of the fab guys might have one. Otherwise, Anyone know a cheap place on the south shore / 128 area that can do it? Hell, if you have a small parts cabinet it could be done in 2 minutes. Ill provide the beers