Check out MAC-10 game ready model gun Low-poly 3D model on CGTrader for $10. High-quality mesh by VitaliyK. PBR, Textured, UV Mapped.
SPP (Substance Painter, filesize: 826 MB), TBSCENE (Marmoset Toolbag, filesize: 3.36 MB), FBX (Autodesk FBX, filesize: 277 MB), TEXTURES (Textures, filesize: 273 MB), BLEND (Blender, filesize: 819 MB)