mm, I think it should work
it will work, but if you restart WR after setting it, it dissapeares, so you need to set it again...
VB:
You open WR (with hack)
Go to Shop/Inventory
Select 5th slot hack = on
Select the m60 @ that slot
Exit WR
Open wr (with hack)
Go to Shop/Inventory
you will have to do everything again