I am trying to find a glock 20 gen 4 slide, either stripped or complete w/ or w/o a barrel. Is there an aftermarket gen 4 slide maker?
Lone Wolf Distributors will make one for you. They will even put certain Glock markings on it.
https://www.lonewolfdist.com/Detail.aspx?PROD=921537
Edit: Disregard....it says Gen 3.