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H.R. 3999: 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.

About the bill

Semi-automatic weapons are legal in America. Automatic weapons are illegal. But what about a device that converts a semi-automatic weapon into an automatic-like firearm?

Such a device, called a bump stock, was used in the Las Vegas massacre last week. The Automatic Gun Fire Prevention Act, labelled S. 1916 and H.R. 3999, was introduced by Sen. Dianne Feinstein (D-CA) and Rep. Carlos Curbelo (R-FL26) within days and would ban bump stock devices.


Last week’s massacre at a country music concert in Las Vegas was the deadliest in ...

Sponsor and status

Carlos Curbelo

Sponsor. Representative for Florida's 26th congressional district. Republican.

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Last Updated: Oct 10, 2017
Length: 3 pages

Oct 10, 2017


Introduced on Oct 10, 2017

This bill is in the first stage of the legislative process. It was introduced into Congress on October 10, 2017. It will typically be considered by committee next before it is possibly sent on to the House or Senate as a whole.


11% chance of being enacted according to Skopos Labs (details)


Oct 10, 2017

Bills and resolutions are referred to committees which debate the bill before possibly sending it on to the whole chamber.

Ordered Reported

Passed House (Senate next)

Passed Senate

Signed by the President

H.R. 3999 is a bill in the United States Congress.

A bill must be passed by both the House and Senate in identical form and then be signed by the President to become law.

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“H.R. 3999 — 115th Congress: To amend title 18, United States Code, to prohibit the manufacture, possession, or transfer of ...” 2017. March 23, 2018 <>

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