Originally Posted by txbonds
I'm pretty certain this mainspring housing is metal. It is a bit too rough for sure. I've had a few other folks check it out and they agree that it's pretty sharp.
I'm looking at alternates now.
If it is metal then it is stainless steel. That is a good thing as it is metal and is a good part. You can use a file on that too to knock off the tips of the checkering. Start off with one draw stroke at a time and test to your preference.