Modern Firearms are defined by the ATF as firearms built after 1898.
Compare“Diamondback DB175AB002 DB15 300 AAC Blackout 30+1 16" Black Nitride Black Hardcoat Anodize Picatinny Rail Aluminum Receiver, 15" M-LOK Handguard, Black Carbon Fiber Stock, Black Magpul Grip” has been added to the compare list