Check out Sten MkII S suppressed submachine gun 3D model on CGTrader for $2. High-quality Subdivision ready mesh by Stop-3D-Shop. Textured, UV Mapped.
BLEND (Blender, filesize: 25.3 MB), OBJ (OBJ, filesize: 87.1 MB), FBX (Autodesk FBX, filesize: 29.9 MB)