A site for enthusiasts of the traditional & classic air pistol/firearm

Here you go again, another vintage fix.
This time it is a mark seven Titan, missing the cocking lever. Made one from a bit of EN24 I had to hand:

Is that an original barrel? All the Mark 7's I have seen and all those in adverts show the barrel flush with the cylinder end. If it is orignal then you have a unique variant there.