Modern Firearms are defined by the ATF as firearms built after 1898.
Compare“Ruger 40103 Mark IV Target 22 LR 10+1 5.50" Satin Stainless Bull Barrel, Satin Stainless Steel Slide, Stainless Steel Frame Drilled & Tapped Receiver, Black Checkered Polymer Grip, Right Hand” has been added to the compare list