A belt fed general purpose machine gun in olive: a heavy quick change barrel with a lift handle over the gas system, a hinged feed tray cover, a linked belt climbing out of a box on the left, a wide bipod at the gas block and a fixed shoulder stock. Dimensions 0.139 x 0.273 x 1.200 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: charge at (0.0307, 0.2094, -0.3279); leg-l at (0.0187, 0.132, 0.1041); leg-r at (0.0427, 0.132, 0.1041). Connectors: optic optic-rail at (0.0307, 0.2313, -0.1819) facing +Y; muzzle muzzle at (0.0307, 0.178, 0.6001) facing +Z. The trigger linkage, the gas system, the extractor, the feed pawls and any belt run are modelled as solids and left static: a rigid node transform cannot drive a linkage honestly, and faking one costs a consumer more than it gives. Rigid node-transform clips charge-open, charge-close, bipod-open, bipod-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.