Modern Firearms are defined by the ATF as firearms built after 1898.
“Barrett 14031 M82A1 50 BMG 10+1 29" Fluted Barrel, Flat Dark Earth Cerakote Steel Receiver, M1913 Picatinny Acc. Rail, FDE Synthetic Stock w/Sorbothane Recoil Pad, Includes Hard Carry Case” was added to the compare list