27 CFR § 478.11 - Meaning of terms.
When used in this part and in forms prescribed under this part, where not otherwise distinctly expressed or manifestly incompatible with the intent thereof, terms shall have the meanings ascribed in this subpart. Words in the plural form shall include the singular, and vice versa, and words importing the masculine gender shall include the feminine. The terms “includes” and “including” do not exclude other things not enumerated which are in the same general class or are otherwise within the scope thereof.
Act. 18 U.S.C. Chapter 44.
Adjudicated as a mental defective.
(a) A determination by a court, board, commission, or other lawful authority that a person, as a result of marked subnormal intelligence, or mental illness, incompetency, condition, or disease:
(1) Is a danger to himself or to others; or
(2) Lacks the mental capacity to contract or manage his own affairs.
(b) The term shall include -
(1) A finding of insanity by a court in a criminal case; and
(2) Those persons found incompetent to stand trial or found not guilty by reason of lack of mental responsibility pursuant to articles 50a and 72b of the Uniform Code of Military Justice, 10 U.S.C. 850a, 876b.
Admitted to the United States for lawful hunting or sporting purposes.
(a) Is entering the United States to participate in a competitive target shooting event sponsored by a national, State, or local organization, devoted to the competitive use or other sporting use of firearms; or
(b) Is entering the United States to display firearms at a sports or hunting trade show sponsored by a national, State, or local firearms trade organization, devoted to the competitive use or other sporting use of firearms.
(a) Who unlawfully entered the United States without inspection and authorization by an immigration officer and who has not been paroled into the United States under section 212(d)(5) of the Immigration and Nationality Act (INA);
(b) Who is a nonimmigrant and whose authorized period of stay has expired or who has violated the terms of the nonimmigrant category in which he or she was admitted;
(c) Paroled under INA section 212(d)(5) whose authorized period of parole has expired or whose parole status has been terminated; or
Ammunition. Ammunition or cartridge cases, primers, bullets, or propellent powder designed for use in any firearm other than an antique firearm. The term shall not include (a) any shotgun shot or pellet not designed for use as the single, complete projectile load for one shotgun hull or casing, nor (b) any unloaded, non-metallic shotgun hull or casing not having a primer.
(2) Any replica of any firearm described in paragraph (a) of this definition if such replica:
(i) Is not designed or redesigned for using rimfire or conventional centerfire fixed ammunition; or
(3) Any muzzle loading rifle, muzzle loading shotgun, or muzzle loading pistol that is designed to use black powder, or a black powder substitute, and that cannot use fixed ammunition. For purposes of this paragraph (3), the term “antique firearm” does not include any weapon that incorporates a firearm frame or receiver, any firearm that is converted into a muzzle loading weapon, or any muzzle loading weapon that can be readily converted to fire fixed ammunition by replacing the barrel, bolt, breechblock, or any combination thereof.
Armor piercing ammunition. Projectiles or projectile cores which may be used in a handgun and which are constructed entirely (excluding the presence of traces of other substances) from one or a combination of tungsten alloys, steel, iron, brass, bronze, beryllium copper, or depleted uranium; or full jacketed projectiles larger than .22 caliber designed and intended for use in a handgun and whose jacket has a weight of more than 25 percent of the total weight of the projectile. The term does not include shotgun shot required by Federal or State environmental or game regulations for hunting purposes, frangible projectiles designed for target shooting, projectiles which the Director finds are primarily intended to be used for sporting purposes, or any other projectiles or projectile cores which the Director finds are intended to be used for industrial purposes, including charges used in oil and gas well perforating devices.
ATF officer. An officer or employee of the Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) authorized to perform any function relating to the administration or enforcement of this part.
Business premises. The property on which the manufacturing or importing of firearms or ammunition or the dealing in firearms is or will be conducted. A private dwelling, no part of which is open to the public, shall not be recognized as coming within the meaning of the term.
Chief, Federal Firearms Licensing Center (FFLC). The ATF official responsible for the issuance and renewal of licenses under this part.
Commerce. Travel, trade, traffic, commerce, transportation, or communication among the several States, or between the District of Columbia and any State, or between any foreign country or any territory or possession and any State or the District of Columbia, or between points in the same State but through any other State or the District of Columbia or a foreign country.
Committed to a mental institution. A formal commitment of a person to a mental institution by a court, board, commission, or other lawful authority. The term includes a commitment to a mental institution involuntarily. The term includes commitment for mental defectiveness or mental illness. It also includes commitments for other reasons, such as for drug use. The term does not include a person in a mental institution for observation or a voluntary admission to a mental institution.
Complete muffler or silencer device. A firearm muffler or firearm silencer that contains all component parts necessary to function, whether or not assembled or operable.
Controlled substance. A drug or other substance, or immediate precursor, as defined in section 102 of the Controlled Substances Act, 21 U.S.C. 802. The term includes, but is not limited to, marijuana, depressants, stimulants, and narcotic drugs. The term does not include distilled spirits, wine, malt beverages, or tobacco, as those terms are defined or used in Subtitle E of the Internal Revenue Code of 1986, as amended.
Crime punishable by imprisonment for a term exceeding 1 year. Any Federal, State or foreign offense for which the maximum penalty, whether or not imposed, is capital punishment or imprisonment in excess of 1 year. The term shall not include (a) any Federal or State offenses pertaining to antitrust violations, unfair trade practices, restraints of trade, or other similar offenses relating to the regulation of business practices or (b) any State offense classified by the laws of the State as a misdemeanor and punishable by a term of imprisonment of 2 years or less. What constitutes a conviction of such a crime shall be determined in accordance with the law of the jurisdiction in which the proceedings were held. Any conviction which has been expunged or set aside or for which a person has been pardoned or has had civil rights restored shall not be considered a conviction for the purposes of the Act or this part, unless such pardon, expunction, or restoration of civil rights expressly provides that the person may not ship, transport, possess, or receive firearms, or unless the person is prohibited by the law of the jurisdiction in which the proceedings were held from receiving or possessing any firearms.
Curios or relics. Firearms which are of special interest to collectors by reason of some quality other than is associated with firearms intended for sporting use or as offensive or defensive weapons. To be recognized as curios or relics, firearms must fall within one of the following categories:
(a) Firearms which were manufactured at least 50 years prior to the current date, but not including replicas thereof;
(c) Any other firearms which derive a substantial part of their monetary value from the fact that they are novel, rare, bizarre, or because of their association with some historical figure, period, or event. Proof of qualification of a particular firearm under this category may be established by evidence of present value and evidence that like firearms are not available except as collector's items, or that the value of like firearms available in ordinary commercial channels is substantially less.
Customs officer. Any officer of U.S. Customs and Border Protection, any commissioned, warrant, or petty officer of the Coast Guard, or any agent or other person authorized by law to perform the duties of a customs officer.
Dealer. Any person engaged in the business of selling firearms at wholesale or retail; any person engaged in the business of repairing firearms or of making or fitting special barrels, stocks, or trigger mechanisms to firearms; or any person who is a pawnbroker. The term shall include any person who engages in such business or occupation on a part-time basis.
(a) Any explosive, incendiary, or poison gas (1) bomb, (2) grenade, (3) rocket having a propellant charge of more than 4 ounces, (4) missile having an explosive or incendiary charge of more than one-quarter ounce, (5) mine, or (6) device similar to any of the devices described in the preceding paragraphs of this definition; (b) any type of weapon (other than a shotgun or a shotgun shell which the Director finds is generally recognized as particularly suitable for sporting purposes) by whatever name known which will, or which may be readily converted to, expel a projectile by the action of an explosive or other propellant, and which has any barrel with a bore of more than one-half inch in diameter; and (c) any combination of parts either designed or intended for use in converting any device into any destructive device described in paragraph (a) or (b) of this section and from which a destructive device may be readily assembled. The term shall not include any device which is neither designed nor redesigned for use as a weapon; any device, although originally designed for use as a weapon, which is redesigned for use as a signalling, pyrotechnic, line throwing, safety, or similar device; surplus ordnance sold, loaned, or given by the Secretary of the Army pursuant to the provisions of section 4684(2), 4685, or 4686 of title 10, United States Code; or any other device which the Director finds is not likely to be used as a weapon, is an antique, or is a rifle which the owner intends to use solely for sporting, recreational, or cultural purposes.
Director. The Director, Bureau of Alcohol, Tobacco, Firearms, and Explosives, the Department of Justice, Washington, DC.
Discharged under dishonorable conditions. Separation from the U.S. Armed Forces resulting from a dishonorable discharge or dismissal adjudged by a general court-martial. The term does not include any separation from the Armed Forces resulting from any other discharge, e.g., a bad conduct discharge.
Division. A Bureau of Alcohol, Tobacco, Firearms, and Explosives Division.
Engaged in the business - (a) Manufacturer of firearms. A person who devotes time, attention, and labor to manufacturing firearms as a regular course of trade or business with the principal objective of livelihood and profit through the sale or distribution of the firearms manufactured;
(b) Manufacturer of ammunition. A person who devotes time, attention, and labor to manufacturing ammunition as a regular course of trade or business with the principal objective of livelihood and profit through the sale or distribution of the ammunition manufactured;
(c) Dealer in firearms other than a gunsmith or a pawnbroker. A person who devotes time, attention, and labor to dealing in firearms as a regular course of trade or business with the principal objective of livelihood and profit through the repetitive purchase and resale of firearms, but such a term shall not include a person who makes occasional sales, exchanges, or purchases of firearms for the enhancement of a personal collection or for a hobby, or who sells all or part of his personal collection of firearms;
(d) Gunsmith. A person who, as a service performed on existing firearms not for sale or distribution, devotes time, attention, and labor to repairing or customizing firearms, making or fitting special barrels, stocks, or trigger mechanisms to firearms, or placing marks of identification on privately made firearms in accordance with this part, as a regular course of trade or business with the principal objective of livelihood and profit, but such term shall not include a person who occasionally repairs or customizes firearms (including identification), or occasionally makes or fits special barrels, stocks, or trigger mechanisms to firearms. In the case of firearms for purposes of sale or distribution, such term shall include a person who performs repairs (e.g., by replacing worn or broken parts) on complete weapons, or places marks of identification on privately made firearms, but shall not include a person who manufactures firearms (i.e., frames or receivers or complete weapons) by completion, assembly, or applying coatings, or otherwise making them suitable for use, requiring a license as a manufacturer;
(e) Importer of firearms. A person who devotes time, attention, and labor to importing firearms as a regular course of trade or business with the principal objective of livelihood and profit through the sale or distribution of the firearms imported; and,
(f) Importer of ammunition. A person who devotes time, attention, and labor to importing ammunition as a regular course of trade or business with the principal objective of livelihood and profit through the sale or distribution of the ammunition imported.
Executed under penalties of perjury. Signed with the prescribed declaration under the penalties of perjury as provided on or with respect to the return form, or other document or, where no form of declaration is prescribed, with the declaration:
“I declare under the penalties of perjury that this - (insert type of document, such as, statement, application, request, certificate), including the documents submitted in support thereof, has been examined by me and, to the best of my knowledge and belief, is true, correct, and complete.”
Firearm. Any weapon, including a starter gun, which will or is designed to or may readily be converted to expel a projectile by the action of an explosive; the frame or receiver of any such weapon; any firearm muffler or firearm silencer; or any destructive device; but the term shall not include an antique firearm. In the case of a licensed collector, the term shall mean only curios and relics. The term shall include a weapon parts kit that is designed to or may readily be completed, assembled, restored, or otherwise converted to expel a projectile by the action of an explosive. The term shall not include a weapon, including a weapon parts kit, in which the frame or receiver of such weapon is destroyed as described in the definition “frame or receiver”.
Firearm muffler or firearm silencer. Any device for silencing, muffling, or diminishing the report of a portable firearm, including any combination of parts, designed or redesigned, and intended for use in assembling or fabricating a firearm silencer or firearm muffler, and any part intended only for use in such assembly or fabrication.
Frame or receiver. The term “frame or receiver” shall have the same meaning as in § 478.12.
Fugitive from justice. Any person who has fled from any State to avoid prosecution for a felony or a misdemeanor; or any person who leaves the State to avoid giving testimony in any criminal proceeding. The term also includes any person who knows that misdemeanor or felony charges are pending against such person and who leaves the State of prosecution.
(a) Any firearm which has a short stock and is designed to be held and fired by the use of a single hand; and
(b) Any combination of parts from which a firearm described in paragraph (a) can be assembled.
Identification document. A document containing the name, residence address, date of birth, and photograph of the holder and which was made or issued by or under the authority of the United States Government, a State, political subdivision of a State, a foreign government, political subdivision of a foreign government, an international governmental or an international quasi- governmental organization which, when completed with information concerning a particular individual, is of a type intended or commonly accepted for the purpose of identification of individuals.
Importation. The bringing of a firearm or ammunition into the United States; except that the bringing of a firearm or ammunition from outside the United States into a foreign-trade zone for storage pending shipment to a foreign country or subsequent importation into this country, pursuant to this part, shall not be deemed importation.
Importer. Any person engaged in the business of importing or bringing firearms or ammunition into the United States. The term shall include any person who engages in such business on a part-time basis.
Importer's or manufacturer's serial number. The serial number placed by a licensee on a firearm, including any full or abbreviated license number, any such identification on a privately made firearm, or a serial number issued by the Director. For purposes of 18 U.S.C. 922(k) and § 478.34, the term shall include any associated licensee name, or licensee city or State placed on a frame or receiver.
Indictment. Includes an indictment or information in any court, under which a crime punishable by imprisonment for a term exceeding 1 year (as defined in this section) may be prosecuted, or in military cases to any offense punishable by imprisonment for a term exceeding 1 year which has been referred to a general court-martial. An information is a formal accusation of a crime, differing from an indictment in that it is made by a prosecuting attorney and not a grand jury.
Interstate or foreign commerce. Includes commerce between any place in a State and any place outside of that State, or within any possession of the United States (not including the Canal Zone) or the District of Columbia. The term shall not include commerce between places within the same State but through any place outside of that State.
Intimate partner. With respect to a person, the spouse of the person, a former spouse of the person, an individual who is a parent of a child of the person, and an individual who cohabitates or has cohabitated with the person.
Large capacity ammunition feeding device. A magazine, belt, drum, feed strip, or similar device for a firearm manufactured after September 13, 1994, that has a capacity of, or that can be readily restored or converted to accept, more than 10 rounds of ammunition. The term does not include an attached tubular device designed to accept, and capable of operating only with, .22 caliber rimfire ammunition, or a fixed device for a manually operated firearm, or a fixed device for a firearm listed in 18 U.S.C. 922, appendix A.
Licensed collector. A collector of curios and relics only and licensed under the provisions of this part.
Licensed dealer. A dealer licensed under the provisions of this part.
Licensed importer. An importer licensed under the provisions of this part.
Licensed manufacturer. A manufacturer licensed under the provisions of this part.
Machine gun. Any weapon which shoots, is designed to shoot, or can be readily restored to shoot, automatically more than one shot, without manual reloading, by a single function of the trigger. The term shall also include the frame or receiver of any such weapon, any part designed and intended solely and exclusively, or combination of parts designed and intended, for use in converting a weapon into a machine gun, and any combination of parts from which a machine gun can be assembled if such parts are in the possession or under the control of a person. For purposes of this definition, the term “automatically” as it modifies “shoots, is designed to shoot, or can be readily restored to shoot,” means functioning as the result of a self-acting or self-regulating mechanism that allows the firing of multiple rounds through a single function of the trigger; and “single function of the trigger” means a single pull of the trigger and analogous motions. The term “machine gun” includes a bump-stock-type device, i.e., a device that allows a semi-automatic firearm to shoot more than one shot with a single pull of the trigger by harnessing the recoil energy of the semi-automatic firearm to which it is affixed so that the trigger resets and continues firing without additional physical manipulation of the trigger by the shooter.
Mental institution. Includes mental health facilities, mental hospitals, sanitariums, psychiatric facilities, and other facilities that provide diagnoses by licensed professionals of mental retardation or mental illness, including a psychiatric ward in a general hospital.
Misdemeanor crime of domestic violence.
(a) Is a Federal, State or local offense that:
(1) Is a misdemeanor under Federal or State law or, in States which do not classify offenses as misdemeanors, is an offense punishable by imprisonment for a term of one year or less, and includes offenses that are punishable only by a fine. (This is true whether or not the State statute specifically defines the offense as a “misdemeanor” or as a “misdemeanor crime of domestic violence.” The term includes all such misdemeanor convictions in Indian Courts established pursuant to 25 CFR part 11.);
(2) Has, as an element, the use or attempted use of physical force (e.g., assault and battery), or the threatened use of a deadly weapon; and
(3) Was committed by a current or former spouse, parent, or guardian of the victim, by a person with whom the victim shares a child in common, by a person who is cohabiting with or has cohabited with the victim as a spouse, parent, or guardian, (e.g., the equivalent of a “common law” marriage even if such relationship is not recognized under the law), or a person similarly situated to a spouse, parent, or guardian of the victim (e.g., two persons who are residing at the same location in an intimate relationship with the intent to make that place their home would be similarly situated to a spouse).
(b) A person shall not be considered to have been convicted of such an offense for purposes of this part unless:
(1) The person is considered to have been convicted by the jurisdiction in which the proceedings were held.
(2) The person was represented by counsel in the case, or knowingly and intelligently waived the right to counsel in the case; and
(3) In the case of a prosecution for which a person was entitled to a jury trial in the jurisdiction in which the case was tried, either
(i) The case was tried by a jury, or
(ii) The person knowingly and intelligently waived the right to have the case tried by a jury, by guilty plea or otherwise.
(c) A person shall not be considered to have been convicted of such an offense for purposes of this part if the conviction has been expunged or set aside, or is an offense for which the person has been pardoned or has had civil rights restored (if the law of the jurisdiction in which the proceedings were held provides for the loss of civil rights upon conviction for such an offense) unless the pardon, expunction, or restoration of civil rights expressly provides that the person may not ship, transport, possess, or receive firearms, and the person is not otherwise prohibited by the law of the jurisdiction in which the proceedings were held from receiving or possessing any firearms.
NICS. The National Instant Criminal Background Check System established by the Attorney General pursuant to 18 U.S.C. 922(t).
Pawnbroker. Any person whose business or occupation includes the taking or receiving, by way of pledge or pawn, of any firearm as security for the payment or repayment of money. The term shall include any person who engages in such business on a part-time basis.
Permanently inoperable. A firearm which is incapable of discharging a shot by means of an explosive and incapable of being readily restored to a firing condition. An acceptable method of rendering most firearms permanently inoperable is to fusion weld the chamber closed and fusion weld the barrel solidly to the frame. Certain unusual firearms require other methods to render the firearm permanently inoperable. Contact ATF for instructions.
Person. Any individual, corporation, company, association, firm, partnership, society, or joint stock company.
Pistol. A weapon originally designed, made, and intended to fire a projectile (bullet) from one or more barrels when held in one hand, and having (a) a chamber(s) as an integral part(s) of, or permanently aligned with, the bore(s); and (b) a short stock designed to be gripped by one hand and at an angle to and extending below the line of the bore(s).
Principal objective of livelihood and profit. The intent underlying the sale or disposition of firearms is predominantly one of obtaining livelihood and pecuniary gain, as opposed to other intents such as improving or liquidating a personal firearms collection: Provided, That proof of profit shall not be required as to a person who engages in the regular and repetitive purchase and disposition of firearms for criminal purposes or terrorism. For purposes of this part, the term “terrorism” means activity, directed against United States persons, which -
(c) Is intended -
(1) To intimidate or coerce a civilian population;
(2) To influence the policy of a government by intimidation or coercion; or
(3) To affect the conduct of a government by assassination or kidnapping.
Privately made firearm (PMF). A firearm, including a frame or receiver, completed, assembled, or otherwise produced by a person other than a licensed manufacturer, and without a serial number placed by a licensed manufacturer at the time the firearm was produced. The term shall not include a firearm identified and registered in the National Firearms Registration and Transfer Record pursuant to chapter 53, title 26, United States Code, or any firearm manufactured or made before October 22, 1968 (unless remanufactured or remade after that date).
Published ordinance. A published law of any political subdivision of a State which the Director determines to be relevant to the enforcement of this part and which is contained on a list compiled by the Director, which list is incorporated by reference in the Federal Register, revised annually, and furnished to licensees under this part.
Readily. A process, action, or physical state that is fairly or reasonably efficient, quick, and easy, but not necessarily the most efficient, speediest, or easiest process, action, or physical state. With respect to the classification of firearms, factors relevant in making this determination include the following:
(1) Time, i.e., how long it takes to finish the process;
(2) Ease, i.e., how difficult it is to do so;
(3) Expertise, i.e., what knowledge and skills are required;
(4) Equipment, i.e., what tools are required;
(5) Parts availability, i.e., whether additional parts are required, and how easily they can be obtained;
(6) Expense, i.e., how much it costs;
(7) Scope, i.e., the extent to which the subject of the process must be changed to finish it; and
(8) Feasibility, i.e., whether the process would damage or destroy the subject of the process, or cause it to malfunction.
Renounced U.S. citizenship.
(b) The term shall not include any renunciation of citizenship that has been reversed as a result of administrative or judicial appeal.
Revolver. A projectile weapon, of the pistol type, having a breechloading chambered cylinder so arranged that the cocking of the hammer or movement of the trigger rotates it and brings the next cartridge in line with the barrel for firing.
Rifle. A weapon designed or redesigned, made or remade, and intended to be fired from the shoulder, and designed or redesigned and made or remade to use the energy of an explosive to fire only a single projectile through a rifled bore for each single pull of the trigger.
Secure gun storage or safety device.
(3) A safe, gun safe, gun case, lock box, or other device that is designed to be or can be used to store a firearm and that is designed to be unlocked only by means of a key, a combination, or other similar means.
Semiautomatic assault weapon.
(1) Norinco, Mitchell, and Poly Technologies Avtomat Kalashnikovs (all models),
(2) Action Arms Israeli Military Industries UZI and Galil,
(3) Beretta Ar70 (SC-70),
(4) Colt AR-15,
(5) Fabrique National FN/FAL, FN/LAR, and FNC,
(6) SWD M-10, M-11, M-11/9, and M-12,
(7) Steyr AUG,
(8) INTRATEC TEC-9, TEC-DC9 and TEC-22, and
(9) Revolving cylinder shotguns, such as (or similar to) the Street Sweeper and Striker 12;
(b) A semiautomatic rifle that has an ability to accept a detachable magazine and has at least 2 of -
(1) A folding or telescoping stock,
(2) A pistol grip that protrudes conspicuously beneath the action of the weapon,
(3) A bayonet mount,
(4) A flash suppressor or threaded barrel designed to accommodate a flash suppressor, and
(5) A grenade launcher;
(c) A semiautomatic pistol that has an ability to accept a detachable magazine and has at least 2 of -
(2) A threaded barrel capable of accepting a barrel extender, flash suppressor, forward handgrip, or silencer,
(4) A manufactured weight of 50 ounces or more when the pistol is unloaded, and
(5) A semiautomatic version of an automatic firearm; and
(d) A semiautomatic shotgun that has at least 2 of -
(1) A folding or telescoping stock,
(2) A pistol grip that protrudes conspicuously beneath the action of the weapon,
(3) A fixed magazine capacity in excess of 5 rounds, and
(4) An ability to accept a detachable magazine.
Semiautomatic pistol. Any repeating pistol which utilizes a portion of the energy of a firing cartridge to extract the fired cartridge case and chamber the next round, and which requires a separate pull of the trigger to fire each cartridge.
Semiautomatic rifle. Any repeating rifle which utilizes a portion of the energy of a firing cartridge to extract the fired cartridge case and chamber the next round, and which requires a separate pull of the trigger to fire each cartridge.
Semiautomatic shotgun. Any repeating shotgun which utilizes a portion of the energy of a firing cartridge to extract the fired cartridge case and chamber the next round, and which requires a separate pull of the trigger to fire each cartridge.
Short-barreled rifle. A rifle having one or more barrels less than 16 inches in length, and any weapon made from a rifle, whether by alteration, modification, or otherwise, if such weapon, as modified, has an overall length of less than 26 inches.
Short-barreled shotgun. A shotgun having one or more barrels less than 18 inches in length, and any weapon made from a shotgun, whether by alteration, modification, or otherwise, if such weapon as modified has an overall length of less than 26 inches.
Shotgun. A weapon designed or redesigned, made or remade, and intended to be fired from the shoulder, and designed or redesigned and made or remade to use the energy of an explosive to fire through a smooth bore either a number of ball shot or a single projectile for each single pull of the trigger.
State of residence. The State in which an individual resides. An individual resides in a State if he or she is present in a State with the intention of making a home in that State. If an individual is on active duty as a member of the Armed Forces, the individual's State of residence is the State in which his or her permanent duty station is located, as stated in 18 U.S.C. 921(b). The following are examples that illustrate this definition:
Unlawful user of or addicted to any controlled substance. A person who uses a controlled substance and has lost the power of self-control with reference to the use of controlled substance; and any person who is a current user of a controlled substance in a manner other than as prescribed by a licensed physician. Such use is not limited to the use of drugs on a particular day, or within a matter of days or weeks before, but rather that the unlawful use has occurred recently enough to indicate that the individual is actively engaged in such conduct. A person may be an unlawful current user of a controlled substance even though the substance is not being used at the precise time the person seeks to acquire a firearm or receives or possesses a firearm. An inference of current use may be drawn from evidence of a recent use or possession of a controlled substance or a pattern of use or possession that reasonably covers the present time, e.g., a conviction for use or possession of a controlled substance within the past year; multiple arrests for such offenses within the past 5 years if the most recent arrest occurred within the past year; or persons found through a drug test to use a controlled substance unlawfully, provided that the test was administered within the past year. For a current or former member of the Armed Forces, an inference of current use may be drawn from recent disciplinary or other administrative action based on confirmed drug use, e.g., court-martial conviction, nonjudicial punishment, or an administrative discharge based on drug use or drug rehabilitation failure.
U.S.C. The United States Code.