SALT LAKE CITY, UT - OCTOBER 5: A bump stock device that fits on a semi-automatic rifle to increase the firing speed, making it similar to a fully automatic rifle, is installed on a AK-47 semi-automatic rifle, (right) at a gun store on October 5, 2017 in Salt Lake City, Utah. Congress is talking about banning this device after it was reported to of been used in the Las Vegas shootings on October 1, 2017.
SALT LAKE CITY, UT - OCTOBER 5: A bump stock device that fits on a semi-automatic rifle to increase the firing speed, making it similar to a fully automatic rifle, is installed on a AK-47 semi-automatic rifle, (right) at a gun store on October 5, 2017 in Salt Lake City, Utah. Congress is talking about banning this device after it was reported to of been used in the Las Vegas shootings on October 1, 2017. George Frey Getty Images
SALT LAKE CITY, UT - OCTOBER 5: A bump stock device that fits on a semi-automatic rifle to increase the firing speed, making it similar to a fully automatic rifle, is installed on a AK-47 semi-automatic rifle, (right) at a gun store on October 5, 2017 in Salt Lake City, Utah. Congress is talking about banning this device after it was reported to of been used in the Las Vegas shootings on October 1, 2017. George Frey Getty Images