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After purchasing a suppressor from a FFL or manufacturer, a citizen must submit a "Form 4" Application for Tax Paid Transfer and Registration of a Firearm with the Bureau of Alcohol, Tobacco, Firearms, and Explosives (BATFE) and receive a National Firearms Act (NFA) "Tax Stamp" to be transferred the suppressor. A $200 payment must be included with the BATFE Form 4 for the NFA Tax Stamp.

Private ownership of suppressors are regulated on a state-by-state basis and are subject to change. California, Delaware, District of Columbia, Hawaii, Illinois, Massachussetts, New York, New Jersey, and Rhode Island currently do not allow their citizens to privately own suppressors. However, exceptions are made for FFL Dealers with an SOT, manufacturers, peace officers, law enforcement officers, and members of government agencies in some states.

Due to the BATFE's new eForms for NFA items, wait times have decreased. To find current wait times for NFA Forms, NFA TRACKER offers average wait times for ATF Forms.

As of 9/20/2022, ATF code 18 U.S.C., § 921(A)(24) states, "The term “Firearm Silencer” or “Firearm Muffler” means any device for silencing, muffling, or diminishing the report of a portable firearm, including any combination of parts, designed or redesigned, and intended for the use in assembling or fabricating a firearm silencer or firearm muffler, any part intended only for use in such assembly or fabrication." This definition is subject to change. Our definition of a suppressor is: bang bang, much fun, no hearing loss.

Suppressors work by dampening gas flow as it exits the barrel of a firearm. Within a suppressor are baffles that act as chambers to help slow gases by redirecting them. Instead of gas quickly leaving the barrel all at once during unsuppressed fire, the gas from a suppressed firearm leaves cooler and dispersed - creating a quieter sound signiture.