PZ50521 - Panzer III Ausf E/F Conversion Set
Complete set of resin and metal parts to convert the standard Heng Long Panzer III Ausf L into an early Panzer III Ausf E or F. Comprises early style turret and cupola, 37mm main gun, early sprocket and idler covers and different engine deck hatches arrangments. See photos for details.
The Ausf E was the first in the series to go into extended production. Its basic design remain unchange to the end of the series. This is characterised by the 6 roadwheels and 3 return rollers. Specific features are the old style turret and cupola. Main armament was the 3.7mm KwK L/46.5 with an internal mantlet.

PZ50520 - Sturminfantriegeschütz 33 Conversion Set
Complete set of resin and metal parts to convert the standard Heng Long Panzer III Ausf L into a Sturminfantriegeschütz 33 Assault Infantry Gun. Set comprises fully enclosed fighting compartment/superstructure, main 15cm sIG 33 field gun, different hatch arrangements and various armour plates. See photos for details.
Only 24 of these assault infantry guns were produced and they served mainly on the Russian Front during 1942/43. To be completely accurate, teh lower hull should be of Ausf E/F specification.