Is the Mark Lee express finish durable though ? I have a little .22 bolt action to blue. I went to the chemist to have my old bluing formula mixed up. I know it works because i have used it so many times before. Anyway the chemist cannot and will not make it up as eu rules mean he is only permitted to sell pre-wrapped medicines, so he does not stock chemicals anymore.
Also as it contains nitric acid and copper sulphate (thats all it is really) he is not allowed to sell these things either.
So the only bluing solution i see for sale is Mark Lee's express stuff.
