Whakaoti i te rerenga e whai ake nei: Ko te hanga P-40 (Model 81A) i tata ōrite ki te XP-40, engari i hanga ki te 1,040 hp (780 kW) V-1710-33s me tetahi.30 M1919 Browning i roto i ia parirau. I hurihia te ingoa o te kamupene ki te Tauira 81 na nga whakarereketanga nui mai i te Tauira 75 paerewa. Ko France, he kaiwhakahaere nui o te P-36, i hiahia ki tenei kaiwhaiwhai me te tono 140 rererangi hei Hawk 81A-1s. Heoi, whai muri i te 1940
French Armistice te Royal Air Force riro enei rererangi rite Tomahawk Mk.Is. Kaore i whakaarohia tenei rereketanga hei whawhai, na te mea kaore he patu taumaha me te patu, engari na te mea he iti o nga rererangi whawhai whai muri i te Pakanga o Ingarangi, na te RAF i akiaki enei ki te mahi hei whakamahi i Awherika ki te Raki.