HK33A3 — retractable-stock variant of the HK33 for vehicle crews and paratroops. Same roller-delayed action in 5.56mm; the folding-stock version used by Thailand and Malaysian military. Type: Rifle Action: Roller-Delayed Caliber: 5.56x45mm NATO Capacity: 25 Year introduced: 1968, Germany Weight: 192 oz Overall length: 37" Status: Discontinued Military use: Yes Intended use: military