Polyp Gun

The RookTek Anti-Deadlight Special 50 Caliber model 07 “Polyp Gun” (or RT-ADLS, or simply ADLS) is a modified ADL designed to discharge flechette rounds from considerable distance to neutralize Deadlight targets. Sometimes referred to as a “sniper shotgun”, the ADLS is a ballistics-based, high velocity rifle. Unlike the ADL, which was originally developed for anti-materiel use and later renamed, the ADLS was redesigned specifically for use against Deadlight targets where anima-based weapons would be ineffective. Due to the immaterial nature of Deadlight physiology preventing hollow-point bullets from expanding, it was deemed necessary that any weapon designed for use against Deadlights should focus instead on maximizing coverage (either overtime, or with each shot fired).
A system was developed with the ADL in mind whereby rounds would break apart once discharged if a sufficient change in Anima was imposed. Dependent on the payload housed within, this could be used to create an “airburst” effect, substantially increasing the overall point of impact.
Flechette, (small, thin, dart-shaped projectiles) were found to be the payload most capable of maintaining velocity to minimize corrosion before and during penetration. Their minimal spread after dispersal was also favored by marksman over alternatives, like the birdshot employed by most shotguns against Deadlights (where maximum coverage is favored over penetration).
In testing, it was found that the ADL would frequently jam or misfire with repeated use of the new flechette rounds. As a result some changes were made to the ADL, such as to the housing and ejection port to better facilitate the removal of spent casings, as well as the inside of the barrel to reduce wear. These optimizations to the ADL in design and philosophy culminated in the release of the ADL Special.

The ADL and other anti-materiel rifles are still in use today against Deadlights. However, since 4980 their combined use in the field has dropped below that of the ADLS, with only a brief resurgence in 4981. Lauded for its ease of use in striking a target, the ADLS is also favored by seasoned professionals who appreciate the tight pattern of the spread and increased stopping power over predecessors.
Not without its detractors, the ADLS is criticized for the reduction in focused penetration against Deadlights that popularized anti-materiel rifles in the earliest expeditions. The flechette rounds also require a minimum travel distance before “airburst” is possible, and are less effective at short range as a result.