GUNSTOCK STAINS AND FINISHES with Mark Silver. Run time 48 minutes. This DVD features Mark Silver demonstrating how to stain and finish a fine Golden Age Flintlock Kentucky Rifle. This rifle is relief carved with silver wire inlays and exquisite brass and silver mounts. The traditional stain is made from nitric acid. Included in this presentation, Mark Silver demonstrates how to mix up your own nitric acid stain. Mark also shows staining and finishing the ramrod. No. 869906