Kel-Tec SU-16, folding-stock 5.56 NATO semi-auto with 18.5-inch barrel. Uses standard AR-15 STANAG magazines. Type: Rifle Action: Semi-Automatic Caliber: 5.56 NATO Capacity: 10 Year introduced: 2003, USA Weight: 4.7 oz Overall length: 40.5" Status: Active Intended use: Survival, Hunting, Tactical