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. Key Features Cold blue formulation that works on all steel (except stainless steel) For complete reblue applications Formulated for deep blue luster 3 fl. oz.
5 great product good even coverage 4 coats gave a deep dark color Posted by john a purcell on Feb 7th 2020 ordered it on dec 4th did not get product until jan 30th because of backorder
