Check out Double Barrel Shotgun Low-poly 3D model shop 3D model on CGTrader for $10. High-quality mesh by walter1057: 7000 vertices. PBR, Textured, UV Mapped.
BLEND (Blender, filesize: 111 MB), OBJ (OBJ, filesize: 922 KB), FBX (Autodesk FBX, filesize: 925 KB), GLTF (glTF, filesize: 105 MB), PNG (PNG, filesize: 87.6 MB), SPP (Substance Painter, filesize: 693 MB)