i just attempted to get it to work.... to no avail, but i didn't try very hard. Theres several functions in the XcomStrategyGame.upk under XGFacility_Loadout that attempt to stop the heavy from using a pistol... i set all that i could find in there to allow the heavy to have the pistol. I don't know if there is something specific i need to add/change in the INI to allow them to equip it. There must be another method. Also, the only problem would be if the rocket launcher took the spot of the pistol on the UI... but you might be able to change the "eWP_Secondary" to None, and it just won't show up on the UI, but as long as you have the Fire Rocket ability, you should be able to fire a rocket. I have no idea how to get the pistol to equip though.