Further variants were a "Jagdpanzer" 38 carrying the sIG 33/2 Howitzer, of which 30 were produced before the end of the war, and the "Bergepanzer 38", a light recovery vehicle of which 170 were produced. Plans were made to produce other variants, including an assault gun version of the "Jagdpanzer" 38 carrying a 105 mm StuH 42 main cannon, a version mounting the 7.5 cm KwK 42 L/70 gun from the Panther, and an anti-aircraft variant mounted with a "Flak" turret. The war ended before these proposed models were put into production. Prototypes were also developed for the "Jagdpanzer" 38 Starr, this was a simplified version of the Jagdpanzer 38 and also a step towards the E-10. The design removed the recoil absorber from the main 7.5 cm Pak 39 gun, instead attaching the gun to the chassis, and using the "Jagdpanzer" 38's bulk and suspension to absorb the recoil. Three prototypes were built as were eleven pre-production vehicles, of which one was fitted with a diesel engine. Hitler ordered the one prototype committed to combat to be destroyed rather than let it be captured on 31 March 1945. The army requested on 29 April that the gun sights and traversing gear from the nine pre-production vehicles at the Milowitz proving ground, which it deemed not combat worthy, be removed and sent back to the factory to allow combat-ready vehicles to be completed.