Ben Taylor & Son

[putty1]

Get in touch with FX then, would be the best bet.

Thanks for the replies.
I have been in touch with FX. It was they that pointed out that hammer, Spring and adjuster/guide were non standard. Hence my wanting to contact BT for a Spring.
Could start to be a problem for other BT modified rifles. I thought that BT merely added his reg and stock and gave it a tweak but the bits stated above are not FX.
Guess I'll have to buy the bits to put it back to standard.
The reg has already been replaced with Lane one anyway 👍

[Rog5]

I put a Lane antibounce hammer in my S 510 .22 and done away with the BTAS set up, doesn't waste air like it did before. Rog