A supercavitating pistol that fires solid steel darts encased in a gas-generating sabot, creating a bubble envelope around the projectile that reduces water resistance and extends effective range to 30 meters underwater — double the range of conventional underwater weapons. The Barracuda's darts arrive with enough kinetic energy to penetrate diving equipment, underwater vehicle hulls, and the reinforced suits worn by infrastructure workers operating in contaminated water.

Arcturus developed the UW-8 for naval special operations, but the weapon has found extensive use in GLMZ's underwater economy. The city's submerged spaces host smuggling operations, illegal salvage, and clandestine transit networks that conventional law enforcement cannot effectively police. The Barracuda gives underwater operators a decisive range advantage in engagements where 15 additional meters of reach means the difference between firing first and dying first.

The weapon's gas-generating sabot is its most innovative and most dangerous component. The chemical reaction that produces the supercavitation bubble generates hydrogen gas as a byproduct, which means that firing the Barracuda in enclosed submerged spaces builds up an explosive atmosphere. An operator who fires too many rounds in a sealed flooded chamber risks creating a hydrogen pocket that a single spark will detonate. Field operators have learned to count their shots and ventilate between engagements.