Check out Cannons Low-poly 3D model on CGTrader for $39. High-quality mesh by Studio-Lab: 23477 polys, 24121 vertices. Textured, UV Mapped.
FBX (Autodesk FBX, filesize: 1.16 MB), MA (Autodesk Maya, filesize: 888 KB), TEXTURES (Textures, filesize: 23 MB)