Ak 5D seen here with an <a href="https://en.wikipedia.org/wiki/Aimpoint_AB" class="extiw" title="w:Aimpoint AB">Aimpoint</a> red dot sight attached.
<a href="//commons.wikimedia.org/w/index.php?title=User:Shisha&amp;action=edit&amp;redlink=1" class="new" title="User:Shisha (page does not exist)">Shisha</a>
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>