<p>Pictures from RAF Museum, Hendon
</p>
QF 6pdr Class M Mark I with Auto Loader Mk III - an adaptation of the British 6-pounder anti-tank gun, with auto-loading device, used on RAF aircraft in an antisubmarine role during World War II
<a href="//commons.wikimedia.org/wiki/User:The_Land" title="User:The Land">User:The Land</a>
CC BY-SA 3.0
<span class="int-own-work" lang="en">Own work</span>