Hi Stew
It was originally blued (quite rough metalwork so the blueing was rubbish too!), it had been in the boot of a mate's car for ages and was rusty on one side
, it was shooting great though, anyhow, i gave it to my mate when he had the chimney episode and he treat it with something, the rust is nowhere to be seen now
I think he painted it with something (have no idea wehat though!)..
I'm not sure about the availability of spares though i did read that all the seals were bog standard off the shelf ones
Cheers, John