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M554
The M554, which is similar to the M529, is a mechanical time and superquick (MTSQ) fuze developed for use with M413 (T377E1) cargo projectile. The M554 is based on the M501A1 MTSQ upper body and the M137 (XM137) 'booster', which provides a time range of 2-75 seconds. The M137 'booster' is non-detonative and holds an igniferous propellant-based expulsion charge It is not clear if the M554 was ever classified as standard, and as such is commo...
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