History
This was a standard QF 13 pounder field gun barrel and breech with the addition of a retaining catch to the breech to retain the round when loading at high angles.
It was first approved in October 1914 and was issued on Mk I high angle mounting, usually mounted on a motor lorry. The Mk I mounting had an additional recuperator housing mounted directly above the normal recuperator to facilitate gun runout at high angles. Hence the appearance was of a gun barrel with 2 slightly shorter tubes of similar diameter above it.
Mk II mount improved the usability, added deflection gear and the recoil system was improved so that the additional recuperator became unnecessary and was removed. On the Mk II mount the gun has the appearance of a standard 13 pounder.
The mount design was unusual in having both gunlayers on the left side.
Following World War I the guns were returned to service as standard 13 pounder field guns.
Read more about this topic: QF 13 Pounder 6 Cwt AA Gun
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