<p>German Pak 36(r) 76,2 mm anti-tank gun, obtained from converting captured Soviet <a href="//commons.wikimedia.org/wiki/F-22_76_mm_gun" title="F-22 76 mm gun">F-22 76 mm guns</a>.
This example is displayed on the grounds of CFB Borden (<a href="//commons.wikimedia.org/wiki/Base_Borden_Military_Museum" title="Base Borden Military Museum">Base Borden Military Museum</a>).  
Note that the gun is in the full recoil position, with the barrel all the way back.  In normal use the gun would be in this position only in the brief moment after firing.
Photo taken on August 18, 2006.
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Source: Photo by me, <a href="//commons.wikimedia.org/w/index.php?title=User:Balcer&amp;action=edit&amp;redlink=1" class="new" title="User:Balcer (page does not exist)">User:Balcer</a>.
<a href="//commons.wikimedia.org/wiki/User:Balcer~commonswiki" title="User:Balcer~commonswiki">Balcer~commonswiki</a>
CC BY 2.5
<span class="int-own-work" lang="en">Own work</span>