Bremmer Arms/M261 magazines &/ magazine conversion kits

[saddler]

Recently purchased a Bremmer .22

Rifle came with a couple of the 10-rd drop-in mag conversion units.
After more of the same...anyone know of any good stockist?

ALSO

Any after-market magazine work with the Bremmer?

[DanTheMan]

Blackdog do an M261 mag that works ok but the metal mag inserts are usually faultless, I think you can still source them in the US.