For those of you on pins and needles waiting for the answer, yes, it does. Just got a very fast reply to my email to Volquartsen.
Me: Re the barreled receiver you offer for the Ruger Mk IV without bolt. To your knowledge does the existing bolt from my Mk IV Standard just slip right in without any fitting?
Volquartsen: Yes it does.
Gunnery, gunnery, gunnery.
Hit the target, all else is twaddle!
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