Like the Vickers Mk IV, the Mk VIA was designed for use inside AFV's.

These models featured a revised cooling system and a pistol grip. The Mk VIA was a refinement of the Mk IV in that it had a self-contained water-jacket and more efficient barrel removal system.

The Mk VIA had right-handed belt feed, and the Mk VIB had left-hand belt feed....

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"Stand by to pull me out of the seat if I get hit" - Guy Gibson