Did riverside arms change names and can i get firing pin for single shot 12ga send info smtwtfs44 AOL com?

Yes, Riverside Arms was known for producing firearms under different names, primarily associated with the J. Stevens Arms & Tool Company. For a firing pin for a single shot 12-gauge shotgun, it's best to check with specialized gun parts retailers or manufacturers that stock vintage firearm parts. You can also look for online forums or groups dedicated to vintage firearms, as they may have leads on where to find specific parts.