I 115th CONGRESS 1st Session H. R. 4168 IN THE HOUSE OF REPRESENTATIVES October 31, 2017 Mr. Fitzpatrick (for himself, Ms. Titus , Mr. Trott , and Mr. Kildee ) introduced the following bill; which was referred to the Committee on Ways and Means A BILL To amend the Internal Revenue Code of 1986 to treat in the same manner as a machine gun any bump fire stock, or any other devices designed to accelerate substantially the rate of fire of a semiautomatic weapon.