District of Columbia Firearm Freedom Act

(a) In general. Notwithstanding any other provision of District of Columbia law, no law, regulation, rule, or policy of the District may prohibit the possession, acquisition, sale, transfer, transport, or use of any firearm on the basis of—

(1) the firearm being semiautomatic;

(2) the capacity to accept a detachable magazine; or

(3) any feature, characteristic, component, or configuration that is based on appearance, ergonomics, or other nonfunctional or commonly possessed attributes, including a pistol grip, adjustable stock, barrel shroud or handguard, muzzle device, threaded barrel, forward grip, or accessory rail.

(b) Rule of construction. Nothing in this section shall be construed to permit possession of firearms prohibited under Federal law, including items regulated under the National Firearms Act (26 U.S.C. 5801 et seq.), except to the extent Federal law otherwise permits such possession.

(c) Conforming preemption. Any District of Columbia provision defining or prohibiting assault weapons (or substantially similar term) in a manner inconsistent with this section is hereby preempted and shall have no force or effect.