As you can see in the first Pilsen gun, what actually works as the real wall support is a small rudimentary rectangular iron piece extending down through the stock, and being a vertical prolongation of the rear underside of the barrel! It may have been shortened later. 
 
So there is a wooden stage, true, but this was not the wall support because it would have been too weak! 
 
Allright? 
 
Michael
		 
		
		
		
			
		
		
		
		
		
		
		
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