. . . "2.26" . . "2.22" . . . . . . . . . "Mortar Motor Carriage" . . . . "6.32" . . "M21 mortar" . . . "Half-track M21 carrier 81-mm mortar" . "M21 Mortar Motor Carriage" . . . . . "M1-M2 4.2 inch mortar" . . "M21 Mortar Motor Carriage" . . . "M21 81 mm MMC" . .