Diamondback DB15 Carbon Series 5.56mm NATO 16in Midnight Bronze Semi Automatic Modern Sporting Rifle - 30+1 Rounds - The Carbon Series DB15 is Diamondback's budget-friendly AR-15, delivering excellent value without sacrificing reliability. Built with essential features and no unnecessary extras, it's designed to perform right out of the box. Equipped with Magpul furniture, a DB Carbon lower, and an M-LOK compatible free-float handguard, the Carbon Series DB15 offers dependable performance at a price that won't break the bank.