Wikipedia link to Maria gun
I've been working on this for a while now.Now that i love Blender so much I decided to spent this whole day working on this. A lot of hours. Had lots of red lines in it but fixed most of them. Still a few but thats fine. Just to do the unfold and its ready to build. If everything turns out right on the test build the ammo should load into the gun. Let me know what you think!!!