Ord 7 SNL. Organizational spare parts and equipment. A-50. Gun, automatic, 40-mm, .M1, gun, dual, automatic, 40-mm, M2, carriage, gun, 40 mm. M2A1 (A. A.) mount, gun. 40-mm. M3, mount, gun, twin. 40-mm. M4 mount, gun, 40-mm. M5 (airborne). Changes 4: Oct. 1946.

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