Modern Firearms are defined by the ATF as firearms built after 1898.
Compare“Smith & Wesson 14161 M&P M2.0 Full Size Frame 9mm Luger 10+1 4.63" Black Steel Barrel, Gray Optic Cut/Serrated Steel Slide, Gray Aluminum Frame w/Picatinny Rail, Black Polymer Grip” has been added to the compare list