Later models of the Hawk had, depending on the version, 30cals in the wings or 7mm in the wings and the nose guns were both .50cal.
All the Hawks from the French order, including the "later models" were delivered with rifle calibre fuselage guns, not with HMGs. French used the 7.5mm calibre but as the Brits got the remainder of the order, they replaced them with 7.9mm calibre MGs.