Modern Firearms are defined by the ATF as firearms built after 1898.
Compare“AREX 815537024074 Delta M Gen2 Compact Frame 9mm Luger 15+1 4" Black Steel Barrel, Black Nitride Steel Optic Cut/Serrated Slide, Black Polymer Frame w/Picatinny Rail, Black Stippled Grip, Ambidextrous” has been added to the compare list