Modern Firearms are defined by the ATF as firearms built after 1898.
Compare“Colt Mfg O1911SE-A1 Government Limited Edition 45 ACP 7+1 5" Blued National Match Barrel, Blued Serrated Steel Slide & Frame w/Beavertail, Double Diamond Checkered Rosewood Grip, Ambidextrous” has been added to the compare list