Depends
No, not those Depends. Depends on the base pin and the specific frame. Some will, some won't. It's a crap shoot. HOWEVER:
Chuck up the Uberti Base Pin in a padded vice, take off the last 3/16th of the base pin and seat it fully. Can't tell it from a Colt and it no longer blocks the hammer fall. Much much more cost effective than purchasing a Colt base pin. Don't forget to dress the end for a nice smooth fit.
Hide and Watch