I wrote this in the init field of a BLUFOR merc, Black Op (Operator):
this setIdentity "Kevlar_Helmet"
but it didn't do it right.
The soldier now has a greenish/tan looking helmet clipping through the black one.
It either does not work properly or I'm making an obvious mistake.
The same thing goes for other combos, whatever was supposed to show is clipping through the regular gear.