Brownells Dicropan T-4 Touch-Up Liquid Gun Blue 4oz, Made In The USA
DICROPAN T-4 ROUCH-UP LIQUID GUN BLUE. As Maynard Buehler said: "THIS is the BEST yet.". We blue three spots: one with the new blue, one with Oxpho- Blue™ and one with T-4. So far, Oxpho Blue™ is toughest and T-4 next.