How can I know if i have a Rohm RG20 that was banned in the us?

To determine if you have a banned Rohm RG20, check the markings on the firearm, specifically the serial number and any manufacturer's information. The RG20 was banned in the U.S. due to safety concerns, so if your firearm lacks adequate safety features or has no markings indicating it meets current standards, it may be one of the banned models. Additionally, you can contact local law enforcement or a firearms expert for verification. If in doubt, consult the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) for guidance on banned firearms.