18 U.S. Code § 921 - Definitions
For definition of Canal Zone, referred to in subsec. (a)(2), see section 3602(b) of Title 22, Foreign Relations and Intercourse.
2022—Subsec. (a)(21)(C). Pub. L. 117–159, § 12002(1), substituted “to predominantly earn a profit” for “with the principal objective of livelihood and profit”.
Subsec. (a)(22) to (30). Pub. L. 117–159, § 12002(2), (3), added par. (22) and redesignated former pars. (22) to (29) as (23) to (30), respectively.
Subsec. (a)(33)(A). Pub. L. 117–159, § 12005(c)(1)(A), substituted “subparagraphs (B) and (C)” for “subparagraph (C)” in introductory provisions.
Subsec. (a)(33)(A)(i). Pub. L. 117–159, § 12005(c)(1)(B), which directed substitution of “State,” for “State,,” in cl. (ii) of par. (33)(A), was executed in cl. (i) of par. (33)(A) to reflect the probable intent of Congress.
Pub. L. 117–103, § 1104(a), substituted “, Tribal, or local law” for “or Tribal law”.
Subsec. (a)(33)(A)(ii). Pub. L. 117–159, § 12005(a)(1), substituted “by a person similarly” for “or by a person similarly” and inserted “, or by a person who has a current or recent former dating relationship with the victim” before period at end.
Subsec. (a)(33)(C). Pub. L. 117–159, § 12005(c)(2), added subpar. (C).
Subsec. (a)(36). Pub. L. 117–103, § 1101(b), added par. (36).
Subsec. (a)(37). Pub. L. 117–159, § 12005(a)(2), added par. (37).
2018—Subsec. (a)(4). Pub. L. 115–232 substituted “section 7684(2), 7685, or 7686 of title 10” for “section 4684(2), 4685, or 4686 of title 10” in concluding provisions.
2006—Subsec. (a)(33)(A)(i). Pub. L. 109–162, which directed the general amendment of “section 921(33)(A)(i) of title 18”, was executed to par. (33)(A)(i) of subsec. (a), to reflect the probable intent of Congress. Prior to amendment, cl. (i) read as follows: “is a misdemeanor under Federal or State law; and”.
2002—Subsec. (a)(4). Pub. L. 107–296, § 1112(f)(2), substituted “Attorney General” for “Secretary of the Treasury” in concluding provisions.
Subsec. (a)(4)(B). Pub. L. 107–296, § 1112(f)(1), substituted “Attorney General” for “Secretary”.
Subsec. (a)(13), (17)(C). Pub. L. 107–296, § 1112(f)(6), substituted “Attorney General” for “Secretary” wherever appearing.
Subsec. (a)(18). Pub. L. 107–296, § 1112(f)(3), added par. (18) and struck out former par. (18) which read as follows: “The term ‘Secretary’ or ‘Secretary of the Treasury’ means the Secretary of the Treasury or his delegate.”
Subsec. (a)(19). Pub. L. 107–296, § 1112(f)(6), substituted “Attorney General” for “Secretary” in two places.
Subsec. (a)(35). Pub. L. 107–273 added par. (35).
1998—Subsec. (a)(5). Pub. L. 105–277, § 101(h) [title I, § 115(1)], substituted “an explosive” for “the explosive in a fixed shotgun shell”.
Subsec. (a)(7). Pub. L. 105–277, § 101(h) [title I, § 115(2)], substituted “an explosive” for “the explosive in a fixed metallic cartridge”.
Subsec. (a)(16). Pub. L. 105–277, § 101(h) [title I, § 115(3)], added par. (16) and struck out former par. (16) which read as follows: “The term ‘antique firearm’ means—
“(A) any firearm (including any firearm with a matchlock, flintlock, percussion cap, or similar type of ignition system) manufactured in or before 1898; and
“(B) any replica of any firearm described in subparagraph (A) if such replica—
“(i) is not designed or redesigned for using rimfire or conventional centerfire fixed ammunition, or
“(ii) uses rimfire or conventional centerfire fixed ammunition which is no longer manufactured in the United States and which is not readily available in the ordinary channels of commercial trade.”
Subsec. (a)(34). Pub. L. 105–277, § 101(b) [title I, § 119(a)], added par. (34).
1996—Subsec. (a)(33). Pub. L. 104–208 added par. (33).
1995—Subsec. (a)(27). Pub. L. 104–88 substituted “section 13102” for “section 10102”.
1994—Subsec. (a)(17)(B). Pub. L. 103–322, § 110519, amended subpar. (B) generally. Prior to amendment, subpar. (B) read as follows: “The term ‘armor piercing ammunition’ means a projectile or projectile core which may be used in a handgun and which is 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. Such term does not include shotgun shot required by Federal or State environmental or game regulations for hunting purposes, a frangible projectile designed for target shooting, a projectile which the Secretary finds is primarily intended to be used for sporting purposes, or any other projectile or projectile core which the Secretary finds is intended to be used for industrial purposes, including a charge used in an oil and gas well perforating device.”
Subsec. (a)(17)(C). Pub. L. 103–322, § 110519, added subpar. (C).
Subsec. (a)(22)(C)(iii). Pub. L. 103–322, § 330021(1), substituted “kidnapping” for “kidnaping”.
Subsec. (a)(30). Pub. L. 103–322, § 110102(b), which added par. (30) defining “semiautomatic assault weapon”, was repealed by Pub. L. 103–322, § 110105(2). See Effective and Termination Dates of 1994 Amendment note below.
Subsec. (a)(31). Pub. L. 103–322, § 110103(b), which added par. (31) defining “large capacity ammunition feeding device”, was repealed by Pub. L. 103–322, § 110105(2). See Effective and Termination Dates of 1994 Amendment note below.
Subsec. (a)(32). Pub. L. 103–322, § 110401(a), added par. (32).
1993—Subsec. (a)(29). Pub. L. 103–159 added par. (29).
1990—Subsec. (a)(25) to (27). Pub. L. 101–647, § 1702(b)(2), added pars. (25) to (27).
Subsec. (a)(28). Pub. L. 101–647, § 2204(a), added par. (28).
1986—Subsec. (a)(10). Pub. L. 99–308, § 101(1), substituted “business of manufacturing” for “manufacture of”.
Subsec. (a)(11)(A). Pub. L. 99–308, § 101(2), struck out “or ammunition” after “firearms”.
Subsec. (a)(12). Pub. L. 99–308, § 101(3), struck out “or ammunition” after “firearm”.
Subsec. (a)(13). Pub. L. 99–308, § 101(4), struck out “or ammunition” after “firearms”.
Subsec. (a)(17). Pub. L. 99–408 designated existing provisions as subpar. (A) and added subpar. (B).
Subsec. (a)(20). Pub. L. 99–308, § 101(5), amended par. (20) generally. Prior to amendment, par. (20) read as follows: “The term ‘crime punishable by imprisonment for a term exceeding one year’ 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 as the Secretary may by regulation designate, or (B) any State offense (other than one involving a firearm or explosive) classified by the laws of the State as a misdemeanor and punishable by a term of imprisonment of two years or less.”
Subsec. (a)(21). Pub. L. 99–308, § 101(6), added par. (21).
Subsec. (a)(22). Pub. L. 99–360 inserted provision that proof of profit not be required as to a person who engages in the regular and repetitive purchase and disposition of firearms for criminal purposes or terrorism and defined terrorism.
Pub. L. 99–308, § 101(6), added par. (22).
Subsec. (a)(23), (24). Pub. L. 99–308, § 101(6), added pars. (23) and (24).
1975—Subsec. (a)(4). Pub. L. 93–639 substituted “to use solely for sporting, recreational or cultural purposes” for “to use solely for sporting purposes”.
1968—Subsec. (a). Pub. L. 90–618 inserted definitions of “collector”, “licensed collector”, and “crime punishable by imprisonment for a term exceeding one year”, amended definitions of “person”, “whoever”, “interstate or foreign commerce”, “State”, “firearm”, “destructive device”, “dealer”, “indictment”, “fugitive from justice”, “antique firearm”, “ammunition”, and “published ordinance”, and reenacted without change definitions of “shotgun”, “short-barreled shotgun”, “rifle”, “short-barreled rifle”, “importer”, “licensed importer”, “manufacturer”, “licensed manufacturer”, “licensed dealer”, “pawnbroker”, and “Secretary” or “Secretary of the Treasury”.
Subsec. (b). Pub. L. 90–618 substituted provisions determining that a member of the armed forces on active duty is a resident of the State in which his permanent duty station is located for provisions defining “firearm”, “destructive device”, and “crime punishable by imprisonment for a term exceeding one year”.
Pub. L. 117–159, div. A, title II, § 12005(b), June 25, 2022, 136 Stat. 1332, provided that:
Amendment by Pub. L. 117–103 not effective until Oct. 1 of the first fiscal year beginning after Mar. 15, 2022, see section 4(a) of div. W of Pub. L. 117–103, set out as an Effective Date note under section 6851 of Title 15, Commerce and Trade.
Amendment by Pub. L. 115–232 effective Feb. 1, 2019, with provision for the coordination of amendments and special rule for certain redesignations, see section 800 of Pub. L. 115–232, set out as a note preceding section 3001 of Title 10, Armed Forces.
Amendment by Pub. L. 107–296 effective 60 days after Nov. 25, 2002, see section 4 of Pub. L. 107–296, set out as an Effective Date note under section 101 of Title 6, Domestic Security.
Pub. L. 105–277, div. A, § 101(b) [title I, § 119(e)], Oct. 21, 1998, 112 Stat. 2681–50, 2681–70, provided that:
Amendment by Pub. L. 104–88 effective Jan. 1, 1996, see section 2 of Pub. L. 104–88, set out as an Effective Date note under section 1301 of Title 49, Transportation.
Pub. L. 103–322, title XI, § 110105, Sept. 13, 1994, 108 Stat. 2000, provided that subtitle A (§§ 110101–110106) of title XI of Pub. L. 103–322 (amending this section and sections 922 to 924 of this title and enacting provisions set out as notes under this section) and the amendments made by that subtitle were effective Sept. 13, 1994, and were repealed effective as of the date that is 10 years after that date.
Pub. L. 101–647, title XVII, § 1702(b)(4), Nov. 29, 1990, 104 Stat. 4845, provided that:
Pub. L. 99–408, § 9, Aug. 28, 1986, 100 Stat. 921, provided that:
Pub. L. 99–360, § 2, July 8, 1986, 100 Stat. 767, provided that:
Pub. L. 99–308, § 110, May 19, 1986, 100 Stat. 460, provided that:
Pub. L. 90–618, title I, § 105, Oct. 22, 1968, 82 Stat. 1226, provided that:
Pub. L. 90–351, title IV, § 907, June 19, 1968, 82 Stat. 235, provided that:
Pub. L. 109–92, § 5(a), Oct. 26, 2005, 119 Stat. 2099, provided that:
Pub. L. 108–277, § 1, July 22, 2004, 118 Stat. 865, provided that:
Pub. L. 103–322, title XI, § 110101, Sept. 13, 1994, 108 Stat. 1996, provided that subtitle A (§§ 110101–110106) of title XI of Pub. L. 103–322 (amending this section and sections 922 to 924 of this title and enacting provisions set out as notes under this section) could be cited as the “Public Safety and Recreational Firearms Use Protection Act”, prior to repeal by Pub. L. 103–322, title XI, § 110105(2), Sept. 13, 1994, 108 Stat. 2000, effective 10 years after Sept. 13, 1994.
Pub. L. 103–159, title I, § 101, Nov. 30, 1993, 107 Stat. 1536, provided that:
Pub. L. 103–159, title III, § 301, Nov. 30, 1993, 107 Stat. 1545, provided that:
Pub. L. 101–647, title XVII, § 1702(a), Nov. 29, 1990, 104 Stat. 4844, provided that:
Pub. L. 100–649, § 1, Nov. 10, 1988, 102 Stat. 3816, provided that:
Pub. L. 99–570, title I, subtitle I, § 1401, Oct. 27, 1986, 100 Stat. 3207–39, provided that:
Pub. L. 99–308, § 1(a), May 19, 1986, 100 Stat. 449, provided that:
Pub. L. 90–618, § 1, Oct. 22, 1968, 82 Stat. 1213, provided:
Pub. L. 113–6, div. B, title II, Mar. 26, 2013, 127 Stat. 248, provided in part:
Pub. L. 103–159, title I, § 105, Nov. 30, 1993, 107 Stat. 1543, provided that:
For provisions relating to statutory construction of, and admissibility of evidence regarding compliance or noncompliance with, the amendment by section 101(b) [title I, § 119(a)] of Pub. L. 105–277, see section 101(b) [title I, § 119(d)] of Pub. L. 105–277, set out as a note under section 923 of this title.
Pub. L. 103–322, title XI, § 110104, Sept. 13, 1994, 108 Stat. 2000, which provided that the Attorney General was to study the effect of subtitle A (§§ 110101–110106) of title XI of Pub. L. 103–322 and to report the results of the study to Congress not later than 30 months after Sept. 13, 1994, was repealed by Pub. L. 103–322, title XI, § 110105(2), Sept. 13, 1994, 108 Stat. 2000, effective 10 years after Sept. 13, 1994.
Pub. L. 99–308, § 1(b), May 19, 1986, 100 Stat. 449, provided that:
Pub. L. 90–618, title I, § 101, Oct. 22, 1968, 82 Stat. 1213, provided that:
Pub. L. 90–351, title IV, § 901, June 19, 1968, 82 Stat. 225, provided that:
Pub. L. 90–618, title I, § 103, Oct. 22, 1968, 82 Stat. 1226, as amended by Pub. L. 107–296, title XI, § 1112(s), Nov. 25, 2002, 116 Stat. 2279, provided that:
Pub. L. 90–351, title IV, § 903, June 19, 1968, 82 Stat. 234, provided that:
Pub. L. 90–618, title I, § 104, Oct. 22, 1968, 82 Stat. 1226, as amended by Pub. L. 99–514, § 2, Oct. 22, 1986, 100 Stat. 2095, provided that:
Pub. L. 90–351, title IV, § 904, June 19, 1968, 82 Stat. 234, as amended by Pub. L. 99–514, § 2, Oct. 22, 1986, 100 Stat. 2095, provided that:
Pub. L. 99–408, § 10, Aug. 28, 1986, 100 Stat. 922, provided that: