Static nonfunctional stock attachment, NOT a whole weapon. Blender Native, three packed 2048 BC/ORM/Normal maps, actual Native preview and source. Geometry/materials/renders/source generated with automated tools and human-verified. NO GLB. Stock glTF roundtrip HOLD: 575 tangent pair-corner witnesses, Tmax 13.828970075°; exact matrix and zero N witnesses do not waive. Three views saw 62/124 affected body and 2/4 cheek triangles; 62+2 unobserved. Repaired-accent residual near centers 182,445/183,444 cause unproven. Native→raw Nmax .004116708°, supported 5-part Tmax .003860586°, 3 native tangent objects unsupported. ORM red neutral not AO. No all-view/engine/repeated roundtrip guarantee. Read START_HERE and full closure. Commercial finished-work license, no standalone resale.