Pietta™ 1858 Replacement Black Powder Revolver Parts Kit - AC075The Pietta 1858 Replacement Black Powder Revolver Parts Kit contains every part you need to repair your black powder pistol. The kit comes with a color case hardened hammer and trigger, mainspring, hand w hand spring, cylinder stop, and trigger bolt stop spring. Features Color case hardened hammer and trigger New main spring Hand with hand spring Cylinder stop Trigger bolt stop spring ***Always Use Caution When Loading A Firearm