Or glue it. At own risk of irreparable damage.Leave the key in it ... take circlip off the end and withdraw barrel with key attached ... If I remember rightly you should not take the key out as the pins drop ...
replace plastic bit ... refit barrel ...
Or glue it. At own risk of irreparable damage.
Blob of aradite would hold it until you can get a replacement ...Or glue it. At own risk of irreparable damage.
Il bet fitting it is a arse