Its a FN-FAL.
I found it some years ago at the IWA Nuernberg and kneeled before the exhibitor until he gave it to me.
Well, ist almost impossible to get a G3 pin here?!? I searched every army-shop in the perimeter of 400 km and didnt found someone.
The FN-FAL was a big fortune at the IWA, where I bought it from an axhibitor.
It almost looks like a G3 and its a perfect accessoire for my deployments at gun fairs or other gun-rights meetings here in Germany.
My other one is a miniature pin showing a Gepard anti aircraft tank (like my avatar).