I've got an FAC Rapid Mk2 in .20, and I'm thinking about swapping it over to .22.
It's got a Ben Taylor reg running at about 1950PSI, not a modified Theoben reg. Apart from the obvious barrel and mags, what else would need to be changed? I'd be after the most accurate barrel available, up to a maximum of 18" long. I assume a Career barrel would be best? If I did swap over could the reg be left alone, or would it need adjusting?

Thanks,

Guesty.