Hi Tony,
>One British fighter, the Martin-Baker MB 3, was designed to carry six Hispanos, but it didn't see service.
In fact, even the Spitfire was considered for a 6 x 20 mm wing armament, and the Spitfire IV prototype was equipped with a mockup six-gun installation for testing (see Alfred Price' "Spitfire - A Complete Fighting History", p. 97).
Regards,
Henning (HoHun)