The only 'Hurricane thing' about that Tempest, is that all Tempest bodies started out in the factory as Hurricanes, before they were then cut-down at that rear 'extension' and re-machined to the more compact Tempest shape. This was how the initial prototype for the Tempest came about and the cost-conscious management folk at Webley, saw no reason not to continue with the practice once production of the new model Tempest started. Just one basic body shape from which two pistols were produced. Clever stuff.....