Bump-Fires and Similar Devices

Bump-fire devices are just one type of a variety of attachments sold in the United States to increase the rate of fire of semiautomatic firearms to mimic the firepower of a fully automatic machine gun. Most of these devices have been determined to be legal and can be sold unencumbered by gun laws. The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) is in charge of reviewing such devices to determine whether they enable a firearm to actually function as a machine gun−in which case they are illegal to possess pursuant to the federal ban on the possession by private citizens of machine guns manufactured after May 19, 1986.

FAQs About Bump‐Fires and Similar Devices

VPC Statement on Bills to Ban “Bump-Fire” and Other Devices That Mimic Full-Auto Fire

ATF Association Letter on Bump-Fire and Similar Devices Explaining the Need for New Statutory Authority

National Rifle Association Program Listing for “Bump-Fire” Manufacturer Slide Fire From the List of Exhibitors at the Organization’s 2017 Annual Meeting

ATF Opinion Letters on Devices to Increase the Rate of Fire of Semiautomatic Firearms

Read the letters from the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) on the legality of various bump-fire and other devices designed to enable semiautomatic firearms to mimic fully-automatic machine gun fire.

Akins Accelerator, June 26, 2008 – Device Approved

Akins v. United States – Manufacturer Challenge to ATF Ruling that Device was Prohibited Machine Gun

Foeller Device, June 18, 2008 – Device Approved

Slide Fire, June 7, 2010 – Device Approved

Historic Arms SKS Device, May 25, 2011 – Device Approved

3MR Trigger Assembly, October 31, 2013 — Device Approved

Echo Trigger, November 20, 2013 – Device Approved

AutoGlove Device, September 11, 2017 – Device Ruled Machine Gun