as i have pointed out in another thread The MK IV and V Sunderland s had 2 .50 in the nose , 4 .50 in the tail . Fixed twin 50cal in nose and twin 20mm in dorsal turret and .50 in side access doors . plus the 10,000kg (Approx) of ords . ok it was slow but what endurance and not a bad defensive load out in the later versions.