Black Anondized metal rust cleaner preventer?

[bomb_on_bus]

What are/is the best rust cleaners preventers for black anondized metal guns such as an AR-15 that won't discolor the finish?

I have Remingtons gun lubricant spray, Hoppes 9 gun oil, and M-pro-7 CLP. Probably what I have isn't the best and was wondering what works best for you guys.

[eaglemike]

Ummmmm, anodized aluminum isn't going to rust.............. Shooting some degreaser on there will make it look grayish, or a grayish black. CLP or some other lubricant will make is darker and slicker looking

[cineski]

For general gun polishing, I like to use a silicone cloth.