On my last trip over seas I was able to take a few pictures, that was behind glass, that turn out okay. Generally poor lighting and glass reflection caused a large number of bad pictures. These are the French Military Museum. If you are ever in Paris you should stop by there. It is an interesting museum.
What it is the under rifle in the first Photo. I have one but it is ruined, It was found buried in the earth for many years. I cant´t find the name or tipe. Your photo it is the only one I see. Thanks