I would be interested too as I own an old Belgian made A-5 semi auto 12 guage as well. It doesn't always eject properly and I was told I need a new eject spring.
Been a while since i played with an A5 lolGreat old shottys.If I remember right the barrels are interchangeable, but some fitting could be required. Best to talk to someone in the know about that:Try Dave:D. HENRY GUNMAKERS LTD. ... Mailing Address: P.O. Box 424, Bentley Alberta, Canada. TOC-0J0. Courier Delivery: 4527-50 St. Bentley Alberta, Canada. TOC-0J0. ...tel 403 748-3030I think he only answers his phone on Wed. or something because he is so busy...As for getting a barrel from the US - talk to Prophet River - They import guns.Another (slim chance) might be western gun parts in Edmonton.