The Del-Ton Echo 316L in 20-inch configuration is a full-size rifle-length AR-15 with a lightweight barrel profile. The 20-inch lightweight barrel and rifle-length gas system provide maximum 5.56 velocity in a compact-weight package. Del-Ton's chrome-lined barrel construction is retained. An unusual combination of full rifle length and lightweight barrel profile from a value manufacturer. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2016, USA Weight: 60 oz Overall length: 39.5" Status: Active Intended use: Target Shooting, Hunting, Home Defense