The HK33E is the export variant of the HK33 assault rifle, scaled down from the G3 to fire 5.56x45mm NATO. Adopted by numerous nations and special operations units, it brought the HK roller-delayed system to the intermediate cartridge. The E suffix indicates the export model. Used by Thai military and several South American nations. Type: Assault Rifle Action: Roller-Delayed Blowback Caliber: 5.56x45mm NATO Capacity: 25 Year introduced: 1968, Germany Weight: 7.9 oz Overall length: 37" Status: Discontinued Military use: Yes Intended use: Military Use, Service Rifle