The HK33 KA1 is the short-barrel carbine variant of the HK33, featuring a 12.68-inch barrel and collapsible stock. Used by German police and several export military customers as a compact assault rifle. It is to the HK33 what the G36K is to the G36. Type: Assault Rifle Action: Roller-Delayed Blowback Caliber: 5.56x45mm NATO Capacity: 25 Year introduced: 1975, Germany Weight: 7.1 oz Overall length: 28.35" Status: Discontinued Military use: Yes Intended use: Military Use, Law Enforcement