Although I was lucky, a thief went over the lots during viewing and took a few pieces (EKO paratroopers and a very rude 'Stag' novelty of a Hula girl), despite being reported at the time; it was several years before SAS finally got rid of him! The Paratroopers turned-up a few weeks later - via his weasel 'fence' hawking the ill-gotten gains from a Tesco's bag - at the evening toy fair in Odiham, but I'm still looking for the Hula girl!
The parts; you get four small-diameter wheel/axle combinations, rather following the pattern of the earlier (1958) Airfix railway platform baggage/mail trucks, which clip into the gun-carriage, four shells (removed on mine) attached at the hook end (left, above) and an unmarked gun-barrel which also clips onto the marked carriage. One author waxed lyrical about the jigget on his gun, but he had it upside-down, the dragons (etched/moulded down each side of the barrel) feet point toward the ground, and the jigget is a crude elevation stop.It's actually toothed to suggest staged elevation, but doesn't actually connect with the side-edge of the box below the trunions, which it would need to for that to work! However - at a certain point in the arc of depression - it does stop the gun pointing at the carpet, by butting against the side-face of the box!
The barrel contains a spring and piston, finger-pull firing-rod, with which you fire the cannon-balls about until you lose them all! The previously mentioned stop mechanism of the jigget/'elevation/depression ratchet' leaves the barrel firing at, err . . . Giant Mongol or Knight figure-height . . . splat! A paler-gold one on Worthpoint, illustrating the position of the cannon-balls on a mint one. I face my barrel the other way, so the longer 'deck' can take a couple of crew, standing on it.===============================================================
But is it Giant?
Yeah . . . it's marked, init!