A break action over and under shotgun with stacked barrels, a ribbed top rib, a chequered walnut stock and forend, and a top lever over the standing breech. Dimensions 0.050 x 0.165 x 1.057 m (X x Y x Z). Origin at the footprint centre, resting on y = 0; metre units, +Y up, muzzle and point toward +Z. Named pivots: action at (0, 0.0731, -0.1875). Connectors: muzzle muzzle at (0, 0.1186, 0.5285) facing +Z. The barrel group drops about the hinge pin under the standing breech. The top lever, the ejectors and the double trigger linkage are modelled and left static. Rigid node-transform clips open, close drive named nodes on their own pivots. No skinning and no skeleton. Blued gunmetal, bright machined steel, dark anodised alloy, black and dark earth polymer, rubber, walnut, brass, copper, leather, olive paint, optical glass, concrete and emissive red, green and warm white for reticles, lasers, tritium and lamps. Physically based flat colours with no texture maps. Original invented design: no real make, model, manufacturer or marking is represented. Free 3D model for Unity, Godot, Unreal, three.js and Blender. No collision or navigation data.