Originally Posted by DiabloMan
Never use brake cleaner on any firearm, if you care and depend on them.
I agree. The problem with products like Gun Scrubber and brake cleaner is they act like a refrigerant, and can cause flash cooling of the metal they're sprayed on. This can induce rust very quickly on internal areas of a firearm like the trigger and parts inside the bolt. You are much better off using a parts washer, or a can with clean Kerosene, then blow dry with compressed air. It will also dry, but a lot slower and will not cause condensation by rapid evaporation, which leads to rust. Another problem with brake cleaner is that it will damage the finish on many stocks and wood grips.