Produces a rich, authentic, old-style brown finish for original or replica firearms. PLUM BROWN™ Barrel Finish is ideal for restoring antique guns, muzzleloaders and other metal antiques. A durable, protective and attractive finish that’s simple to apply. Just heat metal with propane torch or other clean, convenient method and apply browning solution with sponge. Immediate results – no waiting for old-fashioned slow rust process which can take weeks to finish. - See more at: https://www.birchwoodcasey.com/Refinishing/Metal-Finishing/Plum-Brown%E2%84%A2-Barrel-Finish.aspx#sthash.sFCG6lOx.dpuf