I found the cartridge cut off from a place in England a week or so back. They had no info for shipping outside of the UK and it didn't look promising . I e-mailed them but got no response - until today. Yep, they'll sell me a couple and they just sent me a link for some way that would accept my payment and it was easy. Thanks southerton guns in habrough , England.- weird from our side of the pond , to theirs and now back again.
This part will take some fitting but I'm under the impression with the back part trimmed to fit it should go in without too much trouble. If not I'll still have a spare in case my 39a ever needs one.
One piece at a time , slow going getting parts for relics.