If your front sight is fixed in the position it is supposed to be, and your rear sight is original and pushed all the way one with your point of impact still 3" off your point of aim I would think you would want Kahr to take a look at it. Is the crown on your muzzle untouched? If so Kahr might end up needing to rebarrel it. And if so and your rifle is still under warranty it would be well worth them taking a look at it.