another offering on ebay, that one of our husqvarna enthusiasts might be interested in....listed as a 16ga - but nice clear photos show that they 12ga for a 310AS.

https://www.ebay.com/itm/275695238625?hash=item4030b77de1:g:rXgAAOSwuGFj7-o-&amdata=enc%3AAQAHAAAAsO6wjjPsAy%2BEKzW30mnUMyGkMXpg4HB3qH8w1PVLXOCKFxTYobUTmnIN9uLW9L6%2Fj7esRmlLyQYPQPynTkdc9Sk8XD0QAytPTBefQkdbkrD3A99I9rX24vQcgW%2BLTnw%2BGi1kpyvpPBwXowLOZyKuhECWvgY9e4smWP8%2B2fXYurWU2klcih7Hd7ldyXabxK3LhjVH9%2BWhsMPA5StuT0IKBQv6och9VVH98aWUDi3wxmF8%7Ctkp%3ABk9SR8rjpYTQYQ

best regards,

tom

"it's a poor sort of memory that only works backwards."
lewis carroll, Alice in Wonderland