A heavy electromagnetic scatter cannon that fires frangible Ablonite-KR ceramic slugs which fragment into razor-edged shards upon exiting the barrel. The Shardstorm uses a linear electromagnetic accelerator to propel a solid ceramic cylinder through a rifled fracture sleeve — a barrel section machined with internal stress-inducing ridges that shatter the slug into a predictable cloud of fragments while imparting a rotational spread pattern.

The SH-3 occupies a middle ground between conventional shotguns and area-denial weapons. Each ceramic slug fragments into approximately 60 shards, each one hard enough to defeat soft body armor and sharp enough to cause catastrophic tissue damage. The Ablonite-KR ceramic is radar-transparent and produces no metallic signature, making the weapon's ammunition invisible to standard weapon-detection systems tuned for ferrous projectiles.

Arcturus developed the Shardstorm for operations in environments with dense electronic surveillance where conventional metallic ammunition would be detected in flight by tracking systems. The ceramic shards pass through standard bullet-trajectory sensors without registering, arriving at the target with no electronic warning. This capability has made the SH-3 extremely popular among operators who work in high-security zones where every fired round is tracked in real time.