The standard-issue threat-response uniform for Arcturus field operatives, the FieldGuard MK-7 integrates semi-rigid trauma plates within a flexible aramid-graphene weave that hardens on impact and returns to pliability within 0.3 seconds. The deep charcoal shell is treated with Arcturus's proprietary ThermoNull coating, which scatters thermal imaging signatures and resists incendiary splash. Collar and cuff ports allow pass-through routing for standard BCI hardlines without breaking the suit's sealed integrity. Chest and back panels carry embossed Arcturus sigils in matte silver that glow faintly under specific UV spectra — a passive ID protocol used by Arcturus drones in low-light engagement zones.

The MK-7 is cut wide through the shoulder to accommodate standard chrome arm augments and includes an articulated tail gusset at the rear waistband as a baseline geneware accommodation. Operatives on the Shelf know this uniform on sight: it means Arcturus has a contract in the area, and whoever is wearing it has the legal authority to detain, restrain, and in certain sanctioned zones, use lethal force. The uniform itself is not sold commercially — possession without a valid Arcturus employment token embedded in the weave's RFID layer is a restricted-carry offense.