The OLDI-3 is a contact-delivery weapon disguised as a standard medical injector, approximately the size and weight of a thick pen. On skin contact and trigger depression, it delivers a payload of oxidative iron nanoparticle suspension directly through the dermis via high-pressure micro-needle array, bypassing the need for visible puncture or vascular access. The particles enter the lymphatic system and begin a slow oxidative process that progressively degrades lymph node tissue, producing an expanding cascade of immune dysfunction, chronic inflammation, and eventually systemic failure. The process takes between three days and three weeks depending on the payload concentration and the target's biological constitution.

The insidious design intent of the OLDI-3 is temporal dislocation — the weapon is designed to be used in a moment of brief physical contact (a handshake, a crowd brush, a brief struggle) and to produce consequences that emerge long after any connection to that moment can be established. Lazarus Pharmaceuticals developed it under a medical research exemption, ostensibly to study lymphatic drug delivery mechanisms. The weaponized application was, according to company documentation, entirely unintended, a position that has satisfied no investigator who has examined it. The injector contains no moving parts that would register on standard weapons scanners, and the micro-needle array is indistinguishable from a standard dermal patch applicator.

The name 'Rust' describes the slow, inevitable quality of its effect. 'The Long Shake' refers to the handshake delivery method favored by professional operators, and has entered GLMZ's political vocabulary as a term for any arrangement where the consequences of a meeting only become apparent weeks later.