McMillan made the stocks and a model 7 action would fit but it'd be Illegal, making a Pistol out of a Rifle.
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Many thanks for all the help, fortunately converting a rifle to a pistol is not a illegal in the UK only converting a prohibited firearm (section 5 )into the regular firearm class (section 1).
So an XP100r could be manufactured in the UK with an overall length of over 24" and a barrel length of over 12" would classed as a section 1 firearm even if one used a rifle action.
The real question is if it was converted in the UK and registered in the UK as a long barreled pistol, would one be able to bring it into the US on a form 6 import permit, for the occasional hunting trips.

Does your law specify only convert only.

By the way nice picture posts - a well turned out set of pistols.

Many thanks Dogfox1
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