Thank you guys!
very little progress as time is still fleeting, but an update nevertheless.
I added some recoil dampeners and a breech mechanism to the gun.
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And I built a "sight" for the gunner. Since it is a prototype still in research and testing, the sight box is open, as a technician can access it.
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Next I looked into a more independent sight for the commander, using the design I used on the POLEMOS Urban Attack Vehicle.
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Here you can see the mounted gunner sight.
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But what about the commander sight?
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Is that looking OK? Or should I find a better position?
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Any ideas?
Since I want to add an auto-loader mechanism that may be visible I created some ammunition.
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For this I put a section of plastic card rod into my drill
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And then run it first across a rasp
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and then over some sandpaper.
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And with a little practice I get these nice shells 
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With the idea to cast some more....
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After the first test cast for the ammo was successful I added some "Dencara-style" lights to the former Sherman,
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added some details to the engine and added first rivets.
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And this is how the little low profile tank hunter looks as of today.
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So what do you think, anything major still missing?
What about the commander sight?
I look forward to your C&C.
Cheers
Klaus