You can learn more about them over at the Firing Line. Doesn't take but a minute to register and choose a screen name. Ask people that own 'em. I seen a conversation on the new Taurus in the semiauto forum just this morning, as a matter of fact. I didn't click on it, but definately seen it. Regards.
The first frosty morning I see I switch back to the SW99, or better yet upgrade to a .45.
They are basically nothing more or less than a used Colt. I would recommend staying away from the poorer grades. The clean ones are among the best 45's ever. The Argentines used Swedish Steel which at the time weighed slightly more than U.S. grades, for that reason, an Argentine Colt will weigh slightly more.
Another great buy are the Argentine Browning Hi-powers. These are basically the same story as the Colts. Argentina went to the expense of licensing their Brownings from FN rather than just copying them. The result was full technical support from FN.
I have two Argentine Brownings (It is technically correct and legal to call them Browning) The finish is good but not great. Internally they are absolutely identical to my 1969 era commercial Hi-power, even having the same patterns of tool marks on the barrel locking cam. They clearly were built under Browning supervision.
These Argentine Brownings shoot every bit as good if not a little better than the Belgian made ones and that is very good indeed.