If I may, I seem to recall that the Br 693 had one 20 mm cannon (on one side) and four machine guns in the nose which, if memory serves right, could be tilted downward a bit when conducting an attack at very low level.
Incidentally, at one point in 1938 or 1939, a Canadian maker of railway rolling stock, National Steel Car Corporation of Malton, Ontario, was planning to produce 144 or so examples of the Bréguet attack aircraft - possibly the Br 695, which had Pratt & Whitney R-1535 Twin Wasp jr. engines, which would have been easier to get that the French engines of the Br 693. The British Air Ministry more or less, dare I say, sabotaged the project to keep the Canadian aircraft industry to itself. National Steel Car, which was going to build Westland Lysander army cooperation aircraft, got an additional but relatively small British order for its trouble.
Stay safe.