To have all the parts, less the frame, is likely a gun "destroyed" for some reason. Crime gun, forfeit, military, certain agencies specify destruction , "buy back"... etc. Sometimes they are stripped for parts before destruction.
The thing is, a lot of parts are not drop in & need to be fitted to a particular frame. Unless you have tools and advanced gunsmith / armorer skills... It'll likely cost you more than a good used gun will cost.
No S&W will not sell you a stripped frame.