Hello I am hoping someone can help me figure out more info on my revolver. I know its german made and has "fabico mod 4" on it Its. 22 caliber 8 shot double action revolver. There is absolutely nothing on the internet about it that I can find. Closest thing I found was a short story about a mod 3.. but not mod 4. Is the barrel removable? There is a little give like it is screwed in.. Does anyone know how old it is? There are a few little symbols on it but I can't tell what they are except one is. Like a sheipd with "62" in it. Any info or suggestions would be great. Thanks in advance Also hope I'm posting in the correct place as this is my first post.