Here's Riga in his own words to the ways and means committee on tarrifs in 1913:
http://books.google.com/books?id=BCIuAAAAYAAJ&pg=PA5979&dq=A.H.+Fox+gun+barrels&lr= .

By the way, was A.H. Fox making rifle barrels for Germany, ordering barrels from Germany for a Mauser?(It was for Serbia, retracted and then for the Russian and I finally found it here from 1921: http://books.google.com/books?id=O_4sAAAAYAAJ&pg=PA415&dq=mauser+rifle+and+a.h.+fox , and I think a similar quote is contained in one of McIntosh's books). I've seen info that suggest that they ordered say 1/2 million at one time. Was this the German connection for the Krupp tubes?

This isn't the ref. I say but is along the same lines in 1918:
http://books.google.com/books?id=seIRAAA...n+rifle+barrels

Kind Regards,

Raimey
rse