Diamondback DB1718B002 DB15 300 Blackout 30+1 comes with a Picatinny Rail, Aluminum Receiver, and Black Synthetic Stock. The Carbon Series DB15 is Diamondback's entry level line, offering an outstanding value in an AR-15. The Carbon Series provides all of the reliability and basic features that you need from a rifle and nothing that you don't. Outfitted with Magpul furniture, a DB Carbon lower, and an M-LOK compatible free float handguard, the Carbon Series DB15 is ready for anything at a price you can afford. | Diamondback DB15 Tactical .300 Blackout 16" Black Rifle 30 Round