The splined pin in my receiver will not budge with tapping, even when heat assisted. I could bodgie a support and press it out in the vice, assuming that it will come out It's a lot of trouble given that I have never done it before. Not sure if the spline-end of the pin would not do some damage on the way out. The pin is the pivot for the trigger/sear, in my Mossberg 464 and all I wanted to do was lighten the trigger pull, which is 7 pounds.
What are your opinions please? The choices that I can think of are:-
1. Give it to a smith
2. Have a go myself.
3. Give up