Modern Firearms are defined by the ATF as firearms built after 1898.
Compare“Daniel Defense 0208806030067 DDM4 MK18 No Magazine 10.30" Black Threaded Barrel, Black Hardcoat Anodize Aluminum Picatinny Rail Receiver, SB Tactical SBA3 Brace, Black Overmolded Grip, Ambidextrous” has been added to the compare list