How to change muscle minion weapon?

[Hardest Boss]

I want my guard equip with heavy stun baton and my merc with rifle but they already pick pistol.
I also has delete the pistol rack but they still hold the pistol.
So how to tell them to change the weapon?

[flarefighter]

You can't manually tell them to change weapons. If by "heavy stun baton" you mean the Stun Staff, IIRC only higher level muscle minions can use those [although I usually don't bother with staves]. I'm not immediately sure *exactly* what makes a merc pick up a new item or whether items expire or anything like that, but just sending the Mercs off on Schemes or training new ones should result in them picking up the Rifles.