Juepak Fit is typlical for an RFM kit. However, there are issues. Instruction step 12 requires holes drilled on the underside right side of the upper casement - but there is nothing to place there - so you then need to fill the holes - the holes may be needed for the interior kit (?). I corrected it by placing T-34 tracks over them on the final kit. The gun carriage appears too low - the gun barrel does not have sufficient evelation because the empty shell bag hits the floor. I suspect that step 9 part G5 requires the mirror G4 piece beneath it to add height (which is not in the instructions) - or remove the shell bag. The kit has an interior version, and assuming the parts are the same for the interior version the biggest issue with the kit is that many of the interior and external parts have moulding marks that will need copious sanding to remove. The separate RFM "extras" set has generous photo etch - but advertises a 3-D muzzel brake when the actual is a barrel travel cover.