Description
The Birchwood Casey Plum Brown Barrel Finish is a fast-acting “hot brown” chemical formula that produces a rich, authentic chocolate brown finish on steel. Packaged in a 5 oz bottle, it is purpose-built for restoring and refinishing muzzleloaders, antique long guns, replica firearms, and other metal antiques that call for a traditional old-world patina.
Unlike old-fashioned slow rust-browning processes that can take weeks to develop, this Birchwood Casey formula delivers immediate results. Simply heat the metal with a propane torch or other convenient heat source and apply the solution with a sponge. The finish it produces is durable, protective, and attractive, giving original or reproduction firearms a handsome period-correct look in a single session. Unused solution can be stored in a plastic or glass container and reused on future projects.
A go-to for gunsmiths, traditional muzzleloader shooters, and antique gun restorers, the Plum Brown Barrel Finish (part number 14130) is a staple of the Birchwood Casey firearm care and metal finishing lineup.









