Sig Sauer's entry-level AR-15 with 16-inch barrel, direct impingement, and Magpul furniture. Sig's first conventional AR-15. Type: Carbine Action: Semi-Automatic Caliber: 5.56x45mm NATO Capacity: 30 Year introduced: 2012, USA Weight: 112 oz Overall length: 32" Status: Active Intended use: Sport Shooting, Home Defense