TW-25B is a synthetic PTFE-based light grease that has a dry finish (spit polish finish recommended for the sandbox). It was developed 20 or so years ago, and is the leading commercial weapons lube in the U.S. Military, commonly found on medium caliber weapons.
To comment on an earlier post, it is water-displacing, not water-based. We have a cleaner/degreaser, MC-25, which is such a chemistry.
www.mil-comm.com