Check out Beretta M9A3 9MM Handgun Low-poly 3D model on CGTrader for $50. High-quality mesh by ParallaxGameStudios: 8602 polys, 4416 vertices. PBR, Textured, UV Mapped.
BLEND (Blender, filesize: 7.33 MB), FBX (Autodesk FBX, filesize: 561 KB), SPP (Substance Painter, filesize: 1.18 GB), TEXTURES (Textures, filesize: 364 MB), TBSCENE (Marmoset Toolbag, filesize: 2.15 MB)