The Diamondback Firearms DB15 is a value-priced AR-15 built to mil-spec tolerances in Diamondback Florida facility, offering an accessible entry point into quality AR-15 ownership. Type: Semi-Auto Rifle Action: Gas-Operated Caliber: 5.56x45mm Capacity: 30 Year introduced: 2011, USA Weight: 6.5 oz Overall length: 35" Status: Active Intended use: Home Defense, Plinking, First AR