MIL-I-46497 Indicator, Cartridge Actuated, Delay M4A1, M12A1, M45A1, And M49A1 Metal Parts AssemblyThis specification covers the requirements for the M4A1, M12A1, M12A1, M45A1, and M49A1 Delay Cartridge Actuated Initiator Metal Parts Assembly see 6.1.