Text taken from another Aus sales site.
5mm REM MAG rimfire ammo again available from AGUILA AMMO, Texas USA.
(paraphrased)If anybody with a 5mm rem mag who is looking for ammo, a production run is under way with ammo available in the USA early January.
I don't know if we have an Aguila importer here, but it might be worth a nudge at your local dealer. There must be a lot of 5mmRM firearms still out there that are looking to be fed.