Ruger's entry-level AR-15 with cold hammer-forged chrome-lined barrel, Ruger Rapid Deploy front sight, and mid-length gas system. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm Capacity: 30 Year introduced: 2015, USA Weight: 63.5 oz Overall length: 35.25" Status: Active Intended use: Home Defense, Sport Shooting