To add one additional note to Syracuse Arms use of Krupp barrels, Krupp barrels were optional on Grades A, A-1, B, and C (Damascus barrels were standard); while the highest Grade D featured Damascus or optional Whitworth steel). Krupp barrels seemed to be a popular choice for the Grade A and the seldom seen A-1 models, as about half of those models recorded featured Krupp barrels. One of the three C Grade guns recorded to date had Krupp barrels; but to date I've not recorded a single Grade B gun with Krupp barrels. Syracuse apparently made a special run, or filled a special order for Grade 3 guns with Krupp barrels as I've recorded two examples.
