Check out Retro Raygun V2 3D model on CGTrader for $15. High-quality mesh by firdz3d: 4537 polys, 4435 vertices.
3DS (3D Studio, filesize: 105 KB), BLEND (Blender, filesize: 495 KB), DAE (Collada, filesize: 123 KB), FBX (Autodesk FBX, filesize: 207 KB)