Where can you get parts for a riverside arms co 12 gauge single shot 353au?

To find parts for a Riverside Arms Co. 12 gauge single shot 353AU, you can check online marketplaces like eBay or GunBroker, where individuals often sell firearm parts. Additionally, contacting specialized gunsmiths or firearm repair shops may yield results, as they sometimes have access to vintage parts. You might also explore forums or groups dedicated to vintage firearms, where members can share leads on available parts. Lastly, reaching out to manufacturers of gun parts or vintage firearm suppliers could prove helpful.