A single-shot break-action railgun designed for absolute maximum velocity from the shortest possible barrel. The Terminus fires a 2mm tungsten needle at Mach 12 from a 40cm barrel, achieving penetration values that exceed rifles twice its length. The weapon is designed for a single engagement philosophy — one shot, one kill, then disappear.

Grave Protocol Arms is a manufacturer that exists only as a series of encrypted procurement channels. No facility has been identified, no employees named, and no corporate registration filed in any jurisdiction. The Terminus appears on the black market at irregular intervals, always in sealed cases with no documentation beyond a serial number etched into the receiver.

Forensic analysis of recovered Terminus weapons reveals manufacturing precision that exceeds any known commercial or military standard. Whoever builds these weapons has access to equipment that is not supposed to exist outside of Tier 5 fabrication facilities.