The Focus Prototype is a Legendary Ranged Weapon in Unturned 3. The Focus Prototype uses Energy Cells, which can be used with all the other Focus Weapons.
It can only accept Tactical and Grip attachments. It takes up 8 slots in the player's inventory.
France: Can only be obtained in a section of the RULA Bunker, an unlisted location south of Marseille.
Due to its name, it most likely suggests it was the first model of Focus Weapons to be created.