Dress the ends of the pin with files and sand paper. The steel will be pretty hard and the files may not cut it. Don?t force the file to cut! Use a sharpening stone or a bench grinder to dress the raw end.
Next, I applied a little bit of ?Never Seize? on the new pin. I used a three inch ?c? clamp and one half of my aluminum gas block fixture to press the new pin into the new front sight block hole. I did not want to use a ball peen hammer to pound it in because I did not want to disturb the front site.
Repeat this process for the second pin hole in the front site block.
Here is the reason that you do not want to use not heat treated common nails as raw material for pins!
Thumb Clip Pull Pin.