My only Spanish gun is a Julian Arana made La Sorda, badge engineered to a large sports store in Brisbane Australia in the seventies. It carries the name they had put on it of Sniper.
So, job lot cheap but looks good on the outside while the internals look like they were finished at 4.30 on a Friday afternoon with a mill bastard file.
For years it gave me trouble with firing pins, those swaged in jobs. Broken springs, original ones misfired because of lack of protrusion & my replacements failed on the swage & broke the pin off the body. I finally changed things a bit & used ball point pen springs & a different swage with a washer which tricked it into being a reliable old gun. My wife's go to gun these days.
I like the fact that its 28" barrels are brazed together & not soft soldered. They are well enough regulated with the left full choke barrel shooting more to the right the farther out you get. The first or right barrel is IM & true to point.
I have replaced the hinge pin as well. A very simple thing to do on that design.
O.M