Check out Pistol Concept 3D model on CGTrader for $199. High-quality mesh by MaximMMI: 277000 polys, 277000 vertices.
BLEND (Blender, filesize: 370 MB), OBJ (OBJ, filesize: 143 MB), FBX (Autodesk FBX, filesize: 205 MB), F3D (Autodesk Fusion 360, filesize: 88.3 MB), STP (STEP, filesize: 59.1 MB), OTHER (Other, filesize: 59.1 MB)