$10 M720A1 Mortar Round 60mm Low-poly 3D model by steffe-engdahl. Available on CGTrader with 2618 polys and 1384 vertices. Check it out on CGHub.
OBJ (OBJ, filesize: 374 KB), MA (Autodesk Maya, filesize: 236 KB), DAE (Collada, filesize: 340 KB), USD (USD, filesize: 133 KB), FBX (Autodesk FBX, filesize: 248 KB), PNG (PNG, filesize: 37.7 MB)