Modern Firearms are defined by the ATF as firearms built after 1898.
Compare“Fierce Firearms ROGM308WIN20BF Mini Rogue 308 Win 4+1 20" Hand Lapped/Match Grade Barrel, Black Cerakote Steel Receiver, Forest Camo Mini Rogue w/Adj Comb & Picatinny Rail Carbon Fiber Stock” has been added to the compare list