If you have one from 'Legendary Arms' I think you already 'know' that it isn't genuine, so I guess I don't fully understand your question.
Do you mean to ask whether it's an accurate copy?
If so - that answer's 'no' - but it's a 'fairly close copy' and for that reason, it works well enough for the average reenactor.
Hong Kong and Pakistan produce 'fairly close' copies of pretty much everything for low enough prices - but 'can' produce excellent, properly-marked versions when one pays them enough - it's just that no one ever asks.
Dorsey's replicas 'can' be found, but you'll have to have an expanded wallet - hell, you had to have one when he first made them.
As to Randall - good luck with that, as they have ab-so-lute-ly zero interest in making any one-offs, and unless yours is being shipped to an APO, you'll have an AARP card before you get one, and C&WAS will be but a dim memory, but keep us posted.
Scouts Out!