I 115th CONGRESS 1st Session H. R. 3999 IN THE HOUSE OF REPRESENTATIVES October 10, 2017 Mr. Curbelo of Florida (for himself, Mr. Moulton , Mr. King of New York , Mr. Polis , Mr. Lance , Ms. Kelly of Illinois , Mr. Meehan , Ms. Rosen , Mr. Royce of California , Mr. O'Rourke , Mr. Smith of New Jersey , Mr. Cartwright , Mr. Paulsen , Ms. Gabbard , Mr. Costello of Pennsylvania , Mr. Kihuen , Ms. Ros-Lehtinen , Mr. Delaney , Mr. Dent , Mr. Gene Green of Texas , Ms. Stefanik , and Mr. Perlmutter ) introduced the following bill; which was referred to the Committee on the Judiciary A BILL To amend title 18, United States Code, to prohibit the manufacture, possession, or transfer of any part or combination of parts that is designed and functions to increase the rate of fire of a semiautomatic rifle but does not convert the semiautomatic rifle into a machinegun, and for other purposes.