of the Firearms Control Regulations Act of 1975 (sec. 7–2502.01(a), D.C. Official Code) is amended by striking any firearm, unless and all that follows through paragraph (3) and inserting the following: any firearm described in subsection (c). . (2) Description of firearms remaining illegal Section 201 of the Firearms Control Regulations Act of 1975 (sec. 7–2502.01, D.C. Official Code) is amended by adding at the end the following: (c) A firearm described in this subsection is any of the following: (1) A sawed-off shotgun. (2) A machine gun. (3) A short-barreled rifle. . (3) Conforming amendment The heading of section 201 of the Firearms Control Regulations Act of 1975 (sec. 7–2502.01, D.C. Official Code) is amended by striking Registration requirements and inserting Firearm possession . (b) Conforming amendments to Firearms Control Regulations Act The Firearms Control Regulations Act of 1975 is amended— (1) in section 101 (sec. 7–2501.01, D.C. Official Code), by striking paragraph (13)