For years I've used inexpensive store brand lemon scented furniture spray wax on my firearms. By itself it usually gets into tight spots and crevices better than a paste wax will, but just to make sure it does I use a clean (as in non-oily) toothbrush to make sure it gets where I want it to, then I simply let it dry for a spell, then use a micro fiber cloth to remove the dried residue, taking note of any areas that appear wet, i.e., where the micro fiber cloth couldn't reach, which if found get hit with the toothbrush again so it doesn't build up in these areas. With a light buff all is done until the next time the firearm is fired and requires cleaning. A side benefit that I've noticed from the use of wax is that it adds a better grip to certain surfaces such as Delrin/other synthetic materials and rubber, and also helps to restore dull and faded plastics and rubbers (LOL). The point isn't to produce a shiny finish, but rather to add a very thin dry layer of protection from fingerprints, moisture, or the elements that won't come off on your fingers or stain clothing while handling, and that won't attract dust or dirt in the ways that typical lubricants or greases do.