I should ad. Try not to sand the paint off before using paint stripper. You will get lots of nasty scratches on the material after the paint is removed. When stripping metal parts, use paint stripper and steel wool first and gently rub the paint off. Of course take proper safety precautions. That means gloves, well ventilated area, and safety glasses just to be on the safe side. Also have lots of water handy in case of a spill or mess. Doing it outside near the garden hose is a good choice.
When you do finish stripping paint, be sure to thoroughly clean everything and dry off parts right away. I find that most guns are made from rather cheap metal and will oxidize very quickly.
After stripping the paint, I like to help preserve the new shinny metal with a product called Mothers mag polish. Its avaiable from any auto parts store or canadian tire and should cost around $10.
Ive used this on many guns with great success and it prevents oxidization. If you look at E luders guns, this is the method he uses to make his guns super sexy, as this is the method I told him years ago.
Hope it helps!