Weapon: UG-18
Type: Shotgun
Operators: The Magnetic Assembly
Manufacturer: The Magnetic Assembly

Length: 36.8 centimeters
Weight: 7 lbs

Ammunition: 4 Gauge Shotgun Rounds
Capacity: 6 rounds

Originally the MAG-18, the shotgun was designed in 2017 as a design study for how to better arrange a bullpup style firing mechanism for a firearm. The lessons learned from the design would be folded into the UG-12 bullpup variants produced in 2318 while the MAG-18 shotgun would end up having some basic features added to it for usability and then produced in small batches to get feedback on the weapon system along with real-world usability data.

In 2318 the Magnetic Assembly’s MAG-18 shotgun design was submitted for official adoption by the American Union for use in special circumstances. The weapon would receive the new designation UG-18 and would eventually be accepted then distributed to several units for door breaching and for firing large frangible rounds for security usage inside of starships. The large size of the rounds would make the shotgun popular for use with units that would come up against difficult to bring down creatures or armored targets.

The weapon system is a bullpup design with the ammunition held in the rear of the weapon and the pistol grip located towards the center. The barrel for the weapon is mostly free-floating, with the rail systems located below the main barrel, and canted on either side along the top. There is an ambidextrous fire select and charging handle directly above the grip and trigger assembly. There are also inbuilt iron sights along the top of the gun. The shotgun shells eject to the right side normally but parts can be changed out to eject left for left handed shooters.

The UG-18 is a relatively heavy shotgun with relatively minimal recoil absorption. This makes it better suited for use by soldiers using powered armor or with cybernetic strength enhancement. The intended use is for having a single soldier among a group using the weapon, carrying a variety of special purpose rounds for breaching doors, subduing targets, or generally expanding the capabilities of the squad.

The UG-18 fires massive 4 gauge shotgun shells in a variety of configurations. Typically these larger shell sizes are used to fire larger payloads at low speed which are more suitable for less-lethal options.

A 4 gauge shotgun projectile that is full of a silver-dust suspended in a waxy material that is designed to hit a target and quickly break up so as not to damage anything behind its target.

A traditional buckshot, consisting of several ball bearings.

These rounds consist of a slug made of a compressed ceramic powder that breaks up upon impact. Very similar to breaching rounds, teh Frangible slug is designed to injure a target without over-penetration and causing further damage.

Designed for anti-armor usage. The 4 Gauge Sabot fires a tungsten penetrator designed to pierce through armor.

Built with a power source, inbuilt computer, and impact prongs, the 4 Gauge Stun Round is designed to impact a target, use an electrical charge to stun them, and will automatically re-apply the stunning charge if it feel the target is continuing to move around.

6 round magazine with stun rounds

The weapon system is a bullpup design with the ammunition held in the rear of the weapon and the pistol grip located towards the center. The barrel for the weapon is mostly free-floating, with the rail systems located below the main barrel, and canted on either side along the top. There is an ambidextrous fire select and charging handle directly above the grip and trigger assembly. There are also inbuilt iron sights along the top of the gun. The shotgun shells eject to the right side normally but parts can be changed out to eject left for left handed shooters.