Product Features & Specifications Diamondback DB1731K061 DB15 5.56x45mm NATO 16" 30+1 Flat Dark Earth Adjustable Magpul CTR Stock Black Magpul MOE K2 Grip with Black Gold Lower The Diamondback DB1731K061 DB15 is a versatile rifle chambered in 5.56x45mm NATO, featuring a 16" barrel and a 30+1 cap