Birchwood Casey Perma Blue Liquid Gun Blue 3 oz. 6 Pack.

Specifications and features:
Touches-up scratches & worn spots
Completely reblues most guns
Gives a streak-free, blued finish to steel
3 oz.

All parts to be blued must be thoroughly cleaned with a metal cleaner & any rust must be removed before applying the blue

Will not blue stainless steel!