Description
The Adapter Booster Mk IVM1 is a later form of the Mk IV Adapter Booster. It differs from the Mk IVB only in the configuration of adapter head which is hexagonal rather than octagonal as is that of the Mk IVB. It is also used in the Shell, Chemical, Mk II, for 75mm guns.
Functioning
No information about functioning.
See Also
Cartridge, 75mm Chemical, Mk 2
Source(s)
TM 9-1904, Ammunition Inspection Guide (1944)
