I used Birchwood Casey Gun Scrubber/Solvent on my Glock 19 and I was really surprised at how much gunk came off the gun and how clean the gun got. I didn't realize until after I used it that the can said that it may be harmful to wood and plastic. Technically, the Glock frame is polymer, so is it safe to use or am I going to melt my gun if I do it again?