Birchwood Casey Presto Blue Mag Gun Blue 90ml Bottle

Presto® Mag Gun Blue is a cold blue formulation that works on all steel (except stainless steel). Specifically formulated for when you want a deep blue luster on your firearm’s metal surfaces.

• Cold blue formulation that works on all steel (except stainless steel)
• For complete reblue applications
• Formulated for deep blue luster