The F-59 is a gun with a temper. It's a meld of bio-mechanics and more conventional mechanics. The ambiguous communication between the parts provide that the quality spreads out widely between any two species of the gun. It also makes it near-impossible to modify - though the 'Beholder' uses 'SkinCom' 3rd edition successfully to augment the gun. Unlike the 4th edition, the 3rd edition consists of a kind of net that is put on the surface of the gun without communicating with the gun itself. The 'Beholder' draws advantage of this.