Check out MP5 A5- Game Ready Low-poly 3D model on CGTrader for $24.99. High-quality mesh by insya: 2000 polys, 15000 vertices. PBR, Textured, UV Mapped.
OBJ (OBJ, filesize: 150 MB), FBX (Autodesk FBX, filesize: 150 MB), BLEND (Blender, filesize: 150 MB), TEXTURES (Textures, filesize: 300 MB), PNG (PNG, filesize: 150 MB), JPG (JPG, filesize: 150 MB)