I second the vote for Rapco. I recently purchased an M923A2 which had a pretty recent CARC job on it, 3 color camo. I bought the assorted spray can box from Rapco (383 Green, 383 Brown, and Flat Black. I had just a few small areas to address, the colors are nearly identical. I would bet the "686 Tan CARC Substitute" from Rapco would do you very well.