I had one in 9mm, mags hold 17 rounds
Do you know if the barrels are interchangable?
With what???
are you talking 9mm to .45 ACP????
Churchmouse,
Yes, form 9mm to .45 ACP.
I am looking for info online but am not having much luck as of yet. Got this one second hand and love it as is, but if I can change out barrel, wow!
9mm and 45 pistols use a different breach face. You can't just swap bbls to make them work.
I had one in .45 ACP and it was an OK piece. I doubt the barrels interchange like you are wanting to do. As I understand it some Glocks afford this luxury but not so sure about the astra.
Will changing the slide and barrel assembly work?
If you changed the whole top half it should work. BUT the mag well might be different as well and not accept the needed mag. Also without looking it up I'm not sure what calibers the different models came in. Astra are decent guns but parts availability might be an issue.