Hello all

I have dismantled my newly acquired RB2 Airsporter to try to fit new seals and spring.

I have the piston out but now I am not sure how to continue.

I can see an obstruction that looks like a grub screw jutting into the transfer port when I look down the cylinder through the barrel

Is this normal?

How do I get the ally breech out of the cylinder?

Is it required to drift out the pin across the cylinder that allows the barrel to be removed from the cylinder? This seems a bit radical to have to do just to change the seals on the rotating bereech?

All help gratefully received

Thanks