This .stl has been designed for FDM printing. It is a large model, measuring 185 mm long. It has a total of 12 parts (please see the photo).
The Rear Drive Sprocket have one beveled edge; the non-beveled edge abuts the track; the recesses for these on the rear lower hull will be self evident.
This model will be large on your build plate; the tracks are 185mm in length. Print with supports. To get the detail in the .stl, please print within a .1 to .14mm layer range; going any coarser will erode some of the detail. As with any FDM print, please take care removing the support material and always test fit before gluing.