+1 Mac!
At the PD I work for, quite a few years ago we had a problem with Glocks and brake cleaner. The Chief at the time, not knowing anything about guns, bought and approved brake cleaner for the guys to clean guns with, reasoning that if it makes it quicker and easier to clean their guns, he won't have to pay them so much overtime to clean after qualifications.
Fast forward to the next qualification date. One of the guys, who hadn't cleaned his gun from the last time, locks the slide open on his Dept provided 1st Gen Glock 17 and proceeds to hose it down with brake cleaner before shooting. Shortly thereafter, he couldn't pull the trigger on the gun at all. Wouldn't move even a little bit. They couldn't even strip the gun because they couldn't pull the trigger. In to Glock the gun goes for examination and repair.
As it turns out, the use of the brake cleaner melted the polymer frame to the polymer trigger. Glock managed to get the trigger out and didn't have to replace the frame but every other poly part was replaced.
Moral of the story- use gun cleaners on guns and save the brake/carb cleaner for brakes or carbs. To me, anyway, it's not worth the money saved buying brake cleaner if it ruins your gun when you use it!
Bub