I have a No.1 Mk.III that was converted to a .410 shotgun. I would like to know if there is any way to tell how many were converted? I have ask some other forums and gotten some information but not very much. I see these at gun shows at times but can get no information. I have learned about them being police riot guns but that is about it. Mine was converted in 1935 at RFI. Any information will be appreciated, thanks.
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