Second-generation civilian AR-15 with A2 furniture, 20-inch barrel, and A2 birdcage flash hider. Mirrors the M16A2 military configuration. Type: Rifle Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 1985, USA Weight: 128 oz Overall length: 39.5" Status: Active Intended use: Hunting, Sport Shooting, Home Defense