Check out Artelery machine gun Low-poly 3D model on CGTrader for $5. High-quality mesh by hoanguyen86: 10688 polys, 7130 vertices. Textured.
OBJ (OBJ, filesize: 1.06 MB), TEXTURES (Textures, filesize: 237 KB), FBX (Autodesk FBX, filesize: 1.06 MB), MA (Autodesk Maya, filesize: 1.06 MB)