This is a unique energy weapon inspired by the X-Gun from the anime/manga series Gantz, which fires a wave of compressed energy that takes time to deliver its effect on target, after which point the target violently explodes. While powerful, this delay between firing and any observable physical effect means that the target still has a chance to kill the wielder.

Parts Used

I started with the legacy-content Alien Atomizer mesh from the Mothership Zeta DLC for Fallout 3 and removed the topmost barrel, replacing it with the stubbier bottom barrel. I then rounded off the pistol grip, and changed the Alien Power Cell out for a standard Micro Fusion Cell. I also added the small screen from the Scrap Electronics mesh.

Perks and Challenges

The following properties, perks and challenges apply to this weapon:

• Improved Holdout Weapon
• The Professional
• Curios and Relics
• Open to Experimentation

Procurement

This weapon must be purchased from Dr. Quarton, and cannot otherwise be obtained without console commands.

Dr. Quarton's Notes

The terminal entry in Dr. Quarton's laboratory notes the following:

Project #E-453-C - "L.A.G. 5000"

Tinkering with this prototype surgical device I found has revealed several
egregious design oversights that allow the safety limits to be bypassed
entirely, making it exponentially more dangerous. While likely intended
as a medical tool to allow even unskilled surgeons to make clean incisions,
by simply magnifying the available power supply, it is now possible to
completely amputate a limb with the single press of a button. Oddly, there
seems to be a slight delay between activation and amputation. Warrants
further investigation.

Apocrypha

This weapon was initially developed as a medical device to allow even unskilled surgeons to perform quick, clean and easy incisions, dissections, etc. However, negligence on the part of its designers allows its power level to be tweaked far beyond its safety limits, weaponizing it to violently dismember limbs.