Just finished up an upper AR build and had an issue with the forward assist roll pin not indexing all the way in the holes. I started the roll pin on the underside of the forward assist (to prevent any marring of the finish). I was using a roll pin starter and the proper roll pin punch. I got the roll pin about 1/2 inch in, and was not able to get the last 1/8 to seat. I tried to extract the pin and it is stuck. I tried to heat up the forward assist with a heat gun to expand the hole(s) and that did not work either. The forward assist is seated and working, but it will be an issue when the roll pin/forward assist ever needs to be changed out. Any ideas?

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