I 
119TH CONGRESS 
1ST SESSION H. R. 2790 
To amend title 18, United States Code, to restrict the possession of certain 
firearms, and for other purposes. 
IN THE HOUSE OF REPRESENTATIVES 
APRIL 9, 2025 
Mrs. MCBATH (for herself, Mr. JOHNSON of Georgia, Mr. KRISHNAMOORTHI, 
Mr. AUCHINCLOSS, Mr. DELUZIO, Ms. GARCIA of Texas, Ms. WILSON of 
Florida, Mr. EVANS of Pennsylvania, Ms. SCANLON, Ms. NORTON, Ms. 
PINGREE, Ms. SCHOLTEN, Mr. DAVIS of Illinois, Mr. FROST, Mr. 
CARBAJAL, Mr. THANEDAR, Mr. MENENDEZ, Ms. BROWNLEY, Mr. 
CLEAVER, Ms. SALINAS, Mr. GOLDMAN of New York, Mr. SCHNEIDER, 
Mr. GOTTHEIMER, Mrs. FOUSHEE, Ms. KELLY of Illinois, Ms. SEWELL, 
and Mr. CASTEN) introduced the following bill; which was referred to the 
Committee on the Judiciary 
A BILL 
To amend title 18, United States Code, to restrict the 
possession of certain firearms, and for other purposes. 
Be it enacted by the Senate and House of Representa-
tives of the United States of America in Congress assembled, 
SECTION 1. SHORT TITLE. 
This Act may be cited as the ‘‘Gas-Operated Semi- 
Automatic Firearms Exclusion Act’’ or the ‘‘GOSAFE 
Act’’. 
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SEC. 2. RESTRICTIONS. 
(a) DEFINITIONS.—Section 921(a) of title 18, United 
States Code, is amended by adding at the end the fol-
lowing: 
‘‘(39) The term ‘semi-automatic firearm’ means any 
firearm that— 
‘‘(A) upon initiating the firing sequence, fires 
the first chambered cartridge and uses a portion of 
the energy of the firing cartridge to— 
‘‘(i) extract the expended cartridge case; 
‘‘(ii) chamber the next round; and 
‘‘(iii) prepare the firing mechanism to fire 
again; 
‘‘(B) requires a separate pull, release, push, or 
initiation of the trigger to fire each cartridge; and 
‘‘(C) is not a machinegun. 
‘‘(40) The term ‘cycle the action’, with respect to a 
firearm, means to extract the fired cartridge case, cham-
ber the next cartridge, and prepare the firing mechanism 
to fire again. 
‘‘(41) The term ‘gas-operated’, with respect to a 
semi-automatic firearm, means any firearm that harnesses 
or traps a portion of the high-pressure gas from a fired 
cartridge to cycle the action using— 
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‘‘(A) a long stroke piston, where gas is vented 
from the barrel to a piston that is mechanically fixed 
to the bolt group and moves to cycle the action; 
‘‘(B) a short stroke piston, where gas is vented 
from the barrel to a piston that moves separately 
from the bolt group so that the energy is imparted 
through a gas piston to cycle the action; 
‘‘(C) a system that traps and vents gas from ei-
ther the barrel or the chamber to directly strike or 
impinge the bolt, bolt carrier, or slide assembly, to 
unlock and cycle the action; 
‘‘(D) a hybrid system that combines elements of 
a system described in subparagraph (C) with a sys-
tem described in subparagraph (A) or (B) to capture 
gas vented from the barrel to cycle the action; 
‘‘(E) a blowback-operated system that directly 
utilizes the expanding gases of the ignited propellant 
powder acting on the cartridge case to drive the 
breechblock or breech bolt rearward; or 
‘‘(F) a recoil-operated system that utilizes the 
recoil force to unlock the breech bolt and then to 
complete the cycle of extracting, ejecting, and re-
loading. 
‘‘(42) The term ‘large capacity ammunition feeding 
device’— 
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‘‘(A) means a magazine, belt, drum, feed strip, 
helical feeding device, or similar device, including 
any such device joined or coupled with another in 
any manner, that— 
‘‘(i) has an overall capacity of, or that can 
be readily restored, altered, or converted to ac-
cept, more than 10 rounds of ammunition; and 
‘‘(ii) is not permanently fixed; and 
‘‘(B) does not include any device designed to 
accept, and capable of operating only with, .22 or 
less caliber rimfire ammunition.’’. 
(b) PROHIBITIONS.—Section 922 of title 18, United 
States Code, is amended— 
(1) by inserting after subsection (u) the fol-
lowing: 
‘‘(v)(1) Except as provided in paragraph (2) or (4), 
it shall be unlawful for any person to import, sell, manu-
facture, transfer, receive, or possess, in or affecting inter-
state or foreign commerce, a firearm, device, or combina-
tion of parts described in subparagraphs (A) through (H), 
knowing or having reasonable cause to believe that— 
‘‘(A) the firearm is included on the list of pro-
hibited gas-operated semi-automatic firearms de-
scribed in section 935(a); 
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‘‘(B) the modified non-prohibited firearm, as 
modified, operates as a firearm included on the list 
of prohibited gas-operated semi-automatic firearms 
described in section 935(a); 
‘‘(C) the combination of parts is designed and 
functions to modify an otherwise non-prohibited fire-
arm so that the firearm, as modified, operates as a 
gas-operated semi-automatic firearm included on the 
list of prohibited gas-operated semi-automatic fire-
arms described in section 935(a); 
‘‘(D) the combination of parts is designed to be 
assembled into a firearm that operates as a firearm 
included on the list of prohibited gas-operated semi- 
automatic firearms described in section 935(a); 
‘‘(E) the combination of parts functions to 
produce a gas-operated semi-automatic cycling ac-
tion that was not lawfully manufactured as part of 
an approved firearm design described in section 
935(c); 
‘‘(F) the manual, power-driven, or electronic de-
vice is primarily designed, or redesigned, so that if 
the device is attached to a semi-automatic firearm 
the device— 
‘‘(i) materially increases the rate of fire of 
the firearm; or 
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