There's no need to soak or rub for long periods. The coloring action happens instantly and the color penetrates deep into the metal for a long-lasting finish.
44/40's familiar bluing action is almost magic simply dampen a patch with 44/40, wipe it on and wipe it off immediately with a dry one. Brownells Formula 44/40 Instant Gun Blue - Quart 44/40Ĥ4/40 has long been one of the cold-blue standards in the industry and we here at Brownells are delighted to have purchased the original, high-speed formula and the legendary name and brought it back to its many fans.
