ABOUT COLT 6721 UPPER FOR SALE

  The magwell engraving has adjusted, and Colt has rebranded all their carbines as "Carbine" and no more marked M4 Carbine.  This is actually the only transform towards the product or service.If any FFL during the chain has transferred a decrease being a rifle at any point, it is a rifle. Possessing an FFL isn't going to make them geniuses or sug