Modern Firearms are defined by the ATF as firearms built after 1898.
Compare“Smith & Wesson 10061 Model 66 Combat Magnum 357 Mag or 38 S&W Spl +P Stainless Steel 2.75" 2 Piece Barrel, 6 Shot K-Frame, Full-length Extractor Rod, Synthetic Grip, Internal Lock” has been added to the compare list