froglube, it seems interesting BUT two strange little things.
1. its a protectant that turns into a lubricant when the gun heats up from firing. That when the gun cools down, soaks back into the gun metal.
They say to still lubricate the gun with normal stuff, but NO petroleum stuff as that will kill the frog. But the thing is, the only non petroleum lube ive seen is silicone, and that still is a degreaser.
2. can only use their solvent to clean the gun after froglube is applied. Otherwise you have to degrease the gun again and reapply the froggness.
brownells, seems good. safe for inside the barrel even. but not the cheapest.
polish, hmm lets wipe that finish off everyone.