Unfortunately the Bagman[1] doesn't come in two different sizes; it's only the Bagman2 that has the 'Expedition' and 'Sport' models.
I have a bagman1 in Expedition size that fits a Nelson Longflap perfectly. So they definitely do exist. I think they even made a titanium version.
@mr_tom started
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I have a bagman1 in Expedition size that fits a Nelson Longflap perfectly. So they definitely do exist. I think they even made a titanium version.