Items.xml

<config>

<remove xpath="items/item[@name='meleeWpnBatonT2StunBatonParts']"/>
<append xpath="/items">

<item name="meleeWpnBatonT2StunBatonParts">
	<property name="Extends" value="gunMGT1AK47Parts"/>
	<property name="Material" value="MmeleeWpnBatonParts"/>
	<property name="UnlockedBy" value="perkElectrocutioner"/>
</item>

   </append>

</config>