Description
The complete round, as fired, consists of the following:
The projectile with P.D. M51 or M55 Fuze with M21 Booster or M51A1 or M55A1 with M21A1 Booster.
Functioning
No information about functioning.
See Also
Nothing else to see.
Source(s)
TM 9-1904, Ammunition Inspection Guide (1944)
