I have the Jordi Rubio 75mm L46 barrel. It comes with a white-metal muzzle-break. Now, when glued together, there is a small seam-line visible at the joint . It seems as if the diameter of the barrel is even marginally bigger then that of the muzzle-break. What is the best way to correct this ?

Thank you in advance ,

Harm

The muzzle brake of a gun is a screwed on component so as long as the seam is not massive you could just leave it as it is.
Robbo