Check out RIA VR80 shotgun Low-poly 3D model on CGTrader for $39. High-quality mesh by falloff: 46670 polys, 24008 vertices. PBR, Textured, UV Mapped.
FBX (Autodesk FBX, filesize: 1.81 MB), MA (Autodesk Maya, filesize: 1.42 MB), TEXTURES (Textures, filesize: 1.24 GB)