A long curved box magazine standing on its extended floor plate: a ribbed polymer body with witness ribs down the spine, a steel feed lip block with four brass rounds started into it and an orange follower tab at the base. Dimensions 0.10 by 0.27 by 0.08 m (X by Y by Z). Metre units, +Y up, +Z front; the origin sits on the ground at the footprint centre unless stated otherwise. Wind blown snow, packed track snow, blue glacier ice, dark teal and safety orange station cladding, off white insulated panel, galvanised steel, gunmetal, black polymer, white and grey and teal cold weather cloth, warm window glow and cold blue marker light. Static geometry; no rig, skeleton, animation, collision or navigation data. Original invented archetype: it copies no real firearm and carries no maker, model or product name, and no markings, logos or lettering. It is one rigid part: it does not fit into the weapons as a working node, and there is no ammunition count or reload behaviour.