OREM, UT - FEBRUARY 15: Semi-automatic AR-15's are for sale at Good Guys Guns & Range on February 15, 2018 in Orem, Utah. An AR-15 was used in the Marjory Stoneman Douglas High School shooting in Parkland, Florida.
OREM, UT - FEBRUARY 15: Semi-automatic AR-15's are for sale at Good Guys Guns & Range on February 15, 2018 in Orem, Utah. An AR-15 was used in the Marjory Stoneman Douglas High School shooting in Parkland, Florida. George Frey Getty Images
OREM, UT - FEBRUARY 15: Semi-automatic AR-15's are for sale at Good Guys Guns & Range on February 15, 2018 in Orem, Utah. An AR-15 was used in the Marjory Stoneman Douglas High School shooting in Parkland, Florida. George Frey Getty Images