suppressors are legal but are regulated by federal law and on a state-by-state basis by the Nation Firearm Act (NFA) branch of the Bureau of Alcohol, Tobacco, Firearms and Explosives (BATFE). Private citizens can legally purchase and possess suppressors in 42 states* with a tax stamp.
To purchase a suppressor the following qualifications apply:
RESIDE IN ONE OF THE 42 STATES THAT CURRENTLY ALLOW CIVILIAN OWNERSHIP
BE A RESIDENT OF THE UNITED STATES
BE LEGALLY ELIGIBLE TO PURCHASE A FIREARM
PASS A BATFE BACKGROUND CHECK
BE AT LEAST 21 YEARS OF AGE TO PURCHASE FROM A DEALER
BE AT LEAST 18 YEARS OF AGE TO PURCHASE FROM ANOTHER CITIZEN
*If you are an FFL dealer, manufacturer, member of a law enforcement agency or other government agency, there are additional states where you can own a suppressor.