I'm trying to adjust original Iron sights on my 12K, because slugs are going 50cm to the right at 25m. I can't get the rear sight to move with hammer and punch.
I have read that they can be real pain to move. Is the rear sight just real tight fitting or is there some kind of glue applied?
Any tips on adjusting the sight other than Dremeling it out and replacing with 3rd party sights?