Modern Firearms are defined by the ATF as firearms built after 1898.
Compare“Diamondback DB0500A001 Sidekick 22 LR/22 WMR 9 Shot, 4.50" Black Cerakote Steel Barrel & Cylinder, Black Cerakote Zinc Alloy Frame Black Checkered Grips, Hammer Safety, Exposed Hammer” has been added to the compare list