Surplusarms2: To my knowlege, Uberti cylinders should fit. Though the notches for the locking bolt may not be dimensioned the same....Uberti bolt notches may be a bit wider(Don't have an ASP in hand to compare...so unable to measure & verify). An Uberti bolt may work.. though requiring some fitting. You might also have to replace the hand. Taylor's & Company may be a good source for a Uberti cylinder. Contact Taylor's first, before ordering...to verify parts compatibility. Also: VTI Gun Parts (Uberti), may be an alternate source.
Hope this helps.
Al
ps: Did a little digging and the 'Euroarms of America' site popped up. May be another source.