The body is a rounded rectangular section extruded to full length and then bent backward by a quadratic warp, so the curve is real geometry with flat facets rather than a stack of tilted boxes. A two-piece round sits in the feed lips, three witness slots in the lit blue material run down the spine so the load state reads at a glance, and a canted floor plate closes the bottom. Bounding size 0.10 by 0.39 by 0.16 m; metres, +Y up, +Z forward. Origin: free, at the centre of the magazine body, because a collectible like this is hung in mid-air at whatever hover height the level needs and a base origin would put it on the floor. The geometry surrounds the origin, reaching 0.196 m below it and 0.196 m above it. Clips: bob (2.4 s), spin (3.0 s). Rigid node animation only: named nodes with translation, rotation and scale clips, no skinned rig and no skeleton. No collision volumes and no navigation data. Opaque materials throughout; the pack uses no alpha blending and no transmission.