My group is new to the game and we are having a discussion of what happens to your Heavy Weapon when you requisition another one.
Example #1 - A Devastator starts with a free Heavy Bolter. He pays the requisition points for a Missile Launcher. Does the Missile Launcher replace the Heavy Bolter, or can he now hand the Heavy Bolter to another member of the Kill-Team and use the Missile Launcher instead?
Example #2 - A Tactical Marine starts with a Bolter. He requisitions a Storm Bolter. What happens to the original Bolter? The example of this on page 139 of the Core Rulebook uses the words "Gideon’s player decides to Requisition a storm bolter (20 Requisition) to use instead of his bolt gun". This seems pretty clear to me that the requisition is replacing the original weapon not in addition to it. However, I can't find an actual rule that states this.