Not true..Originally Posted by Pantera1
The biggest steel parts are the barrel & bolt. Both the upper & lower reciever are made of aluminum. It still requires proper oil & lube to keep it pristine, but a good coat should hold you for a trip.
Marines, SEAL's, etc. all use them in salt water & keep them immersed in salt water at times during swims, etc. With a little maintenance they will do fine. On the flip side, all because a weapon is stainless, doesn't mean it won't rust either.