TM 9-1330-200-12/OP 3833 1st Rev. Vol 2/TM 1330-12/1A
Use of practice charge and stopper is
When practice charges are used, never
optional with Grenades M30 and M62.
insert more than one charge into grenade.
Neither is used with Grenade M69.
Do not substitute any other explosive for
authorized practice charge.