Va. Machine guns are illegal within the U.S. for decades, but recently the state has seen a brand new surge of weapons effective at automatic hearth. Small pieces of plastic or metallic applied to transform legal guns into do-it-yourself machine guns are assisting to gasoline gun violence. (AP Picture/Alex Brandon) https://machguns.com/product/heckler-koch-g3sg1-7-62x51mm-machine-gun-pre86-dealer-sample/