So I am a new Parker owner and only own 1 so far

On GB right now there is a 16ga VH receiver without barrels or forearm. I would love to buy it and find/buy a set of barrels for it. All you more experienced collectors- how hard is that to do and is it worth it? If I can find barrels how hard are they to fit? For those who have completed this project was it worth it in the end?
Thanks for any and all advice.
Steve