The AH-IV was another Czechoslovak-designed tankette which Českomoravská Kolben-Daněk was determined not to repeat the problems of its earlier "Tančík vz. 33" tankette and gave the gunner a turret for better observation and all-around fields of fire for its new "AH-IV" tankette. It was assembled from a framework of steel "angle iron" beams, to which armor plates between thick were riveted. The , water-cooled, six-cylinder Praga engine produced at 2500 rpm. It sat in the rear of the fighting compartment and drove the transmission via a driveshaft that ran forward between the driver and commander to the gearbox. It had a top speed on the road of and a range between . The semi-automatic Praga-Wilson transmission had five forward gears and one reverse gear to drive the forward-mounted drive sprocket. The suspension was a smaller version of that used in the Panzerkampfwagen 38(t).