The Pzkpfw IV mit 7,5 cm Ruckstossfrei Kanone 43 & 3cm MK 103, or ingame know as the Panzer IV füe zwei 7.5 cm Rf.K43 und 3cm MK103, was a experimental version of the Panzer IV Ausf H. It was just the same tank design but the 7.5 cm KwK 40 L/48 were be replaced by a 3 cm Rheinmetall-Borsig MK 103. On both side of the turret, a recoilless 7,5 cm Ruckstossfrei Kanone 43 were installed. Those firing 7,5 cm HEAT rockets on a long distance. One shot is enough do damage badly a IS-2 tank. His MK103 gun, also used on the Jaboschreck AA-gun, can fire 380 (HE/M) to 420 (APCR) rounds/min with an armour penetration of APCR 42-52 mm (1.65-2 in)/60°/300 m (656 ft) or 75-95 mm (3-3.7 in)/90°/300 m (656 ft). It can destroy easy a heavy tank with his gun. Only a wooden model have been built.