The Invisible Gun (stylized as Invisible gun in the weapon drop down list, it's name is left blank in-game) is a weapon introduced in version 1.32 of Plazma Burst 2, when this gun is held the user appears to be holding their arms outward, firing projectiles from both hands, allowing the weapon to restore functionality to the arm cannons used by the Grubs in Plazma Burst: Forward to the Past. While it's default statistics are underwhelming, using a trigger action that constantly moves a Decoration towards this weapon alongside various actions modifying the weapon itself, it is possible to create a unique custom gun for Plazma Burst 2 gameplay.
In the drop down list, the weapon appears as a transparent silhouetted Ray Rifle TCoRR with opaque white outlines in a similar way to how the Glock and M4A1 appear in the same list.
Trivia
The Invisible Gun is physically the second smallest weapon in game with a length of "5", beat out by all three hand grenades, who have a value of "3".
The size of each grenade is also smaller, something that cannot yet be modified via trigger actions.
The weapon has a front arm (arm 1 in trigger actions) position value of "1", whereas sidearms like the Pistol C-01p or the Defibrillator have a value of "0.9" instead.
All of the hand-grenades (Grenade C-00n, Shieldnades, and the Telenades) also have a value of "0.9", despite not being equipped to a slot under normal circumstances.