Check out Browning M2 50 Low-poly 3D model on CGTrader for $15. High-quality mesh by istvanszalai: 1201 polys, 694 vertices. PBR, Textured, UV Mapped.
TEXTURES (Textures, filesize: 22.2 MB), OTHER (Other, filesize: 22.2 MB), FBX (Autodesk FBX, filesize: 33.9 KB), UNITYPACKAGE (Unity 3D, filesize: 23.8 MB)