The 12.8 cm Selbstfahrlafette auf VK 30.01(H) "Sturer Emil" (German for "Stubborn Emil") was an experimental World War II German self-propelled anti-tank gun. It was based on the Henschel VK30.01 chassis and armed with a Rheinmetall 12.8 cm K40 L/61 gun (based on the 12.8 cm FlaK 40). This gun could traverse 7° to each side, elevate 10° and depress -15°.