Pietta's Model 1851 Navy "Yank" Pepperbox .36-Cal. Black-Powder Revolver. The first Pepperbox revolvers regained some popularity in the late 1800's as a small concealable weapon. Pietta's Pepperbox features a single action brass backstrap and triggerguard, steel frame with case-hardened finish and walnut grips. Shoots directly out of the six-shot, 3" cylinder (no barrel).