Modern Firearms are defined by the ATF as firearms built after 1898.
“Beretta USA JS92QM9A4M15 M9A4 Centurion 9mm Luger 4.80" Barrel 15+1, Flat Dark Earth Cerakote Polymer Frame, Serrated Steel Optic Cut Slide, Polymer Grip & Decocker Only Safety” was added to the compare list