Would make a great time burner for someone who is looking for a project to entertain themselves. Tig weld would be the only way to go. Use the castle nut provided on the web site to handle the buffer tube issue. If you put some extra time into making up some home made jigs to handle alignment it would add to the fun factor. Like building your own assembly tools for AK building. Not really much of a $ saver due to the amount of time you would most likely invest and finishing could get interesting too. Way cheaper to use a factory lower with so many readily available these days. But just for the heck of it I must say it does have its appeal.