Trigger pin is retained by the trigger spring. use some needle nose pliers and pull the spring off the bar and off to the side of the notch it sits in.swheeet!
I have a browning hi-power but the trigger pin is stuck like no joke; tried just about everything to free the sucker but won't budge.
whoever owned it before me couldn't get it out either apparant by the marks all around it.
other than that, it's an outstanding shooter. That one is in far better condition than mine, looks beautiful.