GEHA Shot Gun

[Chad1992]

I happened to come across this gun by mistake while serfing the web.  Seems like an interesting fire arm.  I haven't done much digging yet, so I figured I pick the brains of you guys on the forum.  Does anybody know much about them or own one?  Did they ever see any kind of military service?  Or maybe show up in the French resitance?
http://readingbreak.com/features/johng/1/geha.htm
https://www.libertytreecollectors.com/productcart/pc/viewPrd.asp?idproduct=3058&idcategory=2