Kel-Tec SU-16C — folding 5.56mm carbine with 16-inch barrel and unique stock that opens to expose a storage compartment for two additional magazines. Accepts AR-15 STANAG magazines; lightweight at under 5 pounds. Type: Rifle Action: Gas-Operated Caliber: 5.56x45mm NATO Capacity: 10 Year introduced: 2004, USA Weight: 64 oz Overall length: 29" Status: Active Intended use: self_defense, sport, hunting