Not sure about if I get your point before, so I decide to give you the 2 possible options, and the link for documente it.
If are you asking about Unarmed the player in test mode, just hit 0 number.
If you want caracter unarmed so take a look to
ai_soldier script (scripbank folder), you will see
CharacterControlUnarmed(e) in action.
3com
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