The Kel-Tec SU-16C in 5.56x45mm with 16-inch barrel is the folding-stock variant of the SU-16 series, featuring a side-folding stock that reduces the overall length to approximately 25 inches. It accepts AR-15 STANAG magazines and has a built-in foregrip that doubles as a pistol shooting rest. The most compact SU-16 variant. Type: Semi-Auto Rifle Action: Gas-Operated Caliber: 5.56x45mm Capacity: 10 Year introduced: 2006, USA Weight: 4.7 oz Overall length: 25" Status: Active Intended use: Backpacking, Home Defense