Maschinenkarabiner 42 (Mkb 42W), Germany. Prototype for an assault rifle, developed by Walther. <br>Attached at the muzzle is a <i>Schießbecher</i>, a device to fire rifle grenades
<a href="//commons.wikimedia.org/wiki/User:Atirador" title="User:Atirador">Franco Atirador</a> (original author), <a href="//commons.wikimedia.org/wiki/User:Sumek101" title="User:Sumek101">Sumek101</a> (graphic redone)
CC BY-SA 3.0
<a href="//commons.wikimedia.org/wiki/File:Maschinenkarabiner_42W.JPG" title="File:Maschinenkarabiner 42W.JPG">File:Maschinenkarabiner_42W.JPG</a>