Conquistador Cannon Falconet B 1500 (Polygon mesh 3D model) is available on CGTrader for $30. Original author: SmartCgArt. Specs: 180513 polys, 171104 verts.
OBJ (OBJ, filesize: 4.8 MB), 3DS (3D Studio, filesize: 11.3 MB), C4D (Cinema 4D, filesize: 13.9 MB), VUE (Vue, filesize: 13.2 MB)