Description
PD fuze XM720E1 is structurally similar to the M557 fuze, except for the following modifications :
(1) The setting sleeve is preset on the superquick (SQ) setting to assure SQ functioning upon impact.
(2) The delay plunger assembly is modified by providing a nondelay element for nondelay initiation by graze action.
(3) The safety adapter mechanism is a modification of the booster assembly M125A1 to provide a minimum arming distance of 25 feet and to fit the XM720E1 fuze into a projectile nose with a 1.7-inch diameter thread. Thus the XM720E1 and M557 fuzes are neither physically nor functionally interchangeable.
Functioning
No information about functioning.
See Also
Source(s)
TM 9-1300-203, Artillery Ammunition (1967)
TM 9-1385-51, Ammunition (Conventional) for Explosive Ordnance Disposal (1967)
