Cleanliness is more important. When you clean your weapon, take the mags apart and clean the crud out. Also inspect your springs. If you need a lubed magazine to make it work over a clean one, you have some other issues(unless we are talking mega capacity mags like a 100rd beta mag)
However, if you wish you can use something like the S&W branded dry lube which is basically close to the Liquid Wrench dry lube since they make it for S&W.