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					Originally Posted by  Lynn Eades
					 
				 
				So just for clarity, you mean the centre two in Andrew's 4 cap photo? 
 If so, that would mean the cap is common to the Bren carrier, the MkVIa Vickers light tank (plus, maybe, other models), as well as the Cromwell. That's a very un British like standardization? 
			
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 Not really mate, we British probably made them with different threads and pitch!!!😵