I have one. A really great tank model. Runs like a charm through all the crap that the woodland trails and meadows of Maine can dish out. There are a lot of steps in the building instructions but I found everything to be clear and straight forward. I recently replaced the main gun with an L7 105mm. Taking out the old and putting in the new was simple and straight forward since most of the construction is with screws and bolts and the instructions act as a maintenance and repair manual. I had it out running yesterday.

fsttanks has done a series of construction videos. Well worth watching.