Check out RWS Kongsberg Protector M151 - M2 3D model on CGTrader for $129. High-quality mesh by Panaristi: 166767 polys, 123159 vertices.
OBJ (OBJ, filesize: 10.6 MB), 3DS (3D Studio, filesize: 3.26 MB), C4D (Cinema 4D, filesize: 4.49 MB), FBX (Autodesk FBX, filesize: 9.28 MB), LWO (Lightwave, filesize: 3.25 MB)