1 32 or 1 35 guns

[MZ826]

Hello

Does anybody have any idea as to where I might be able to find a 1/32 or 1/35 Browning 303 or Vickers K Machine gun for a 1 32 Beaufighter I am working on?

And perhaps even more difficult, a Berezin UBT machine gun for a 1 32 IL2M3?

Thanks in advance,
Graeme