New Precut Closed cell Foam fits PA120 40mm Steel Ammo Can fits 51 37mm Flares

Do you own an Army PA120 40mm Surplus steel ammo can?. Would you like to make it into a quality 37mm Flare case holding 51 rounds?. (larger hole than 37mm). Have other size Ammo cans?. 30cal, 50cal, Fat 50cal, MTM AC50 or 30 cal?.