A few weeks ago I had occasion to visit a VFW hall where they had a replica of a 75 Pak Howitzer (rubber tire variant) which was amazingly detailed and just like the ones I remember, but only about 20 inches in overall size. The breech opened and turning the hand wheels raised and lowered the barrel and all that. The barrel opening was about .40 - .50 and it had rifling. Of course I asked about it. I didn't pull the lanyard or get to handle it myself, but I was told it was fully functional. I was told it belonged to one of the members whose father had worked at the one of the factories where the full size ones were built.
Has anyone else ever seen these? What are they in? 45acp? Where can I get one?