Gun 90 mm. AA M1, M1A1 and M2, Firing Shell H.E. M71. - USA Voorschrift Firing Tables 90 AA-B-3 Gun 90 mm. AA M1, M1A1 and M2 Firing Shell, H.E., M71 with Fuze, Time, Mechanical, M43 and MODS Fuze, P.D. M48 and. MODS. - … Gun 90 mm. M1 Series on Mount AA 90 mm. Gun M1A2 and Gun 90 mm. M2 Series on Mount AA 90 mm. Gun M2A1. …