An advanced chemical spray formulated specifically to disrupt neural-interface connections in augmented attackers. The NB-3 combines a standard capsaicin base with SentryGuard's proprietary NeuroDisrupt compound — a synthetic irritant that interferes with the electrochemical signaling between biological neural tissue and cybernetic interface ports. When sprayed on exposed skin near BCI connection points, the compound causes temporary signal degradation that manifests as lag, phantom inputs, and sensory static in augmented systems.

The NB-3 is marketed as the answer to the 'augmentation gap' — the reality that a chemically enhanced or cybernetically augmented mugger has significant advantages over an unaugmented victim. By temporarily disrupting the attacker's augmentations, the spray theoretically levels the playing field. In practice, the effect is inconsistent — military-grade interfaces with sealed housings are largely immune, while consumer-grade open-port installations are significantly affected.

SentryGuard prices the NB-3 at roughly four times the cost of the standard PS-1, putting it at the upper limit of what Tier 2 residents can afford. This pricing has drawn criticism that SentryGuard is essentially selling protection against augmented crime as a luxury product.