i do a wipe down on my guns after a match...barrel/slide/lower usually using cotton swabs to get to tighter places.... After every 3-4 matches, i get out the brake cleaner and go to town. By the time im done, no more crude. Ive done this using brake cleaner(non-chlorinated) last few years and it works great. I reoil immediately after everything dries which it does very fast. Grip tape and any stickers will come off but I always have replacements ready to paste. It hasnt harmed any pieces of the gun so no worries.