Va. Machine guns are already illegal in the U.S. for decades, but recently the country has observed a fresh surge of weapons able to automatic fire. Small parts of plastic or metal used to transform legal guns into homemade machine guns are assisting to fuel gun violence. (AP Image/Alex Brandon) https://machguns.com/product/lot-1448-dlo-1919a4-browning-class-iii-nfa-fully-transferable/