Bullets Mondragon and Mauser Low-poly 3D model is available on CGTrader for $10. Original author: amazingzonder. Specs: 5252 polys, 5347 verts.
STL (Stereolithography, filesize: 171 KB), OBJ (OBJ, filesize: 185 KB), BLEND (Blender, filesize: 382 KB), FBX (Autodesk FBX, filesize: 583 KB), PNG (PNG, filesize: 16.6 MB), GLTF (glTF, filesize: 16.4 MB)