Andrej, I think rivets are the standard late alloy or steel (perhaps in combination). At least they look of that vintage and construction. The brassy or brown color is a combination of oxidation, patina, and appearance in the photographs. My thoughts only ....
09-02-2014 06:23 PM
My thoughts as well.
You are probably right both offcourse, it could be patina or discoloration.Thanks.
this is a overworked spanisch M 1943... with parts from former German contract S84/98 since 1936