The HK33K is the carbine variant of the HK33, fitted with a 12-inch barrel and fixed stock. Like the standard HK33, it uses roller-delayed blowback operation. It was issued to vehicle crews and specialized units requiring a more compact version of the HK33. Type: Rifle Action: Semi/Full-Auto Caliber: 5.56x45mm Capacity: 25 Year introduced: 1968, Germany Weight: 120 oz Overall length: 21.7" Status: Discontinued Military use: Yes Intended use: military, law_enforcement, service