$25 Sentry Turret 3D model by ARS3D-Studio. Available on CGTrader with 141924 polys and 93286 vertices. Check it out on CGHub.
C4D (Cinema 4D, filesize: 117 MB), OBJ (OBJ, filesize: 127 MB), FBX (Autodesk FBX, filesize: 159 MB), C4D (Cinema 4D, filesize: 117 MB), 3DS (3D Studio, filesize: 112 MB), DAE (Collada, filesize: 121 MB), TEXTURES (Textures, filesize: 61.9 MB)