Bump Stocks: A Timeline | Brady Campaign to Prevent Gun Violence

Bump Stocks: A Timeline

On December 6, 2017, survivors of the Las Vegas Route 91 Harvest Festival massacre testified before the Senate Judiciary Committee on the need for a federal ban on bump stocks. These and similar devices allowed the Las Vegas shooter to turn semi-automatic guns into the functional equivalents of machine guns that could fire 1,100 rounds in a matter of minutes, slaughtering 58 concert-goers and injuring hundreds more.

More than a year after that Congressional hearing, the Department of Justice finally amended federal regulations to clarify that bump stocks fall within the federal definition of machine guns and are illegal under federal law. But we know what will come next- the gun lobby will no doubt challenge this ruling. Only Congress can protect Americans across the country from these horrifically destructive devices.


  1. ATF Review of Bump Stocks

    The Bureau of Alcohol, Tobacco, Firearms, and Explosives (ATF) replies to a request by Slide Fire Solutions, LP for an evaluation of its bump stock technology (which it claimed would assist people with limited hand mobility to fire AR-15 style rifles). The ATF determined that a bump stock was part of a firearm, and therefore not regulated as a firearm.


  1. Judiciary Committee Hearing

    Sen. Dianne Feinstein opens a Judiciary Committee hearing showing videos on the bump stock threat.


  1. Las Vegas Shooting

    In Las Vegas, a shooter uses bump stocks to fire more than 1,100 rounds in 11 minutes, killing 58 people and injuring more than 500 others at the Route 91 Harvest music festival.

  2. Bill Introduced

    Sen. Feinstein again introduces a bill to ban the sale and possession of bump stock equipment.

  3. Lawsuit Filed

    Brady Center files a lawsuit against Slide Fire Solutions, LP and other bump stock manufacturers on behalf of concert-goers at the Las Vegas music festival.

  4. Bill Reintroduced

    Sen. Feinstein reintroduces an assault weapons bill that includes banning bump stocks and similar devices.

  5. Survivor Testimony

    Las Vegas survivors Heather Gooze, Christine Caria, and Heather Sallan urge Congress to ban bump stocks in Senate Judiciary Committee hearing.

  6. Comment Request

    ATF issues pre-rule request for comments (i.e. ANPRM) after Trump Administration directs the agency to develop a rule to ban bump stocks instead of supporting congressional action to do so.


  1. ATF Comments Close

    ATF’s comment period closes, with nearly 116,000 comments received.

  2. Executive Memo

    Days after the Marjory Stoneman Douglas High School massacre in Parkland, FL, Trump issues Executive Memorandum to US Attorney General directing Justice Department to expedite rule-making to ban bump stocks.

  3. Proposed Rule

    ATF issues a proposed rule (i.e. NPRM) to ban bump stocks and other such devices as “machine guns.”

  4. ATF Comments Close

    ATF receives nearly 36,000 comments by this close date for comments, with a majority supporting a nationwide ban on bump stocks.

  5. Lawsuit Dismissed

    Judge holds that Slide Fire Solutions, LP is immune from liability under the federal Protection of Lawful Commerce in Arms Act, dismissing Brady’s lawsuit, but allows amended complaint to be filed.

  6. Vegas Anniversary

    One-year anniversary of the Las Vegas massacre; 9 states and at least 4 localities have banned bump stocks, yet the Trump Administration and Congress have done nothing at the national level to get them off the streets.

  7. 1 Year Since Testimony

    One year since the US Senate heard testimony from survivors of Las Vegas in a hearing calling for an immediate ban bump stocks and similar devices.

  8. Federal Regulation Clarified

    The Trump Administration clarifies a federal regulation, banning bump stocks and similar devices as falling within the prohibition on machine guns and therefore illegal under federal law.

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