Check out Bronco ATTC Mortar Tracked Carrier Low-poly 3D model on CGTrader for $10. High-quality mesh by SalinasAkter: 29483 polys, 31485 vertices. Textured, UV Mapped.
OBJ (OBJ, filesize: 1.68 MB), MAX (Autodesk 3ds Max, filesize: 2.32 MB), 3DS (3D Studio, filesize: 1.61 MB), DAE (Collada, filesize: 2.47 MB), FBX (Autodesk FBX, filesize: 2.52 MB), SKP (Sketchup, filesize: 2.83 MB), W3D (Shockwave 3D, filesize: 2.61 MB)