This post will conclude the machining part of the AR-180B pivot pin for the bolt hold open. We have finally completed the machining portion of this project for this part. Here are the pictures.
This is the process from start to finish.
Our copy compared to the original. I will start parkerizing this next week end.
They are all complete.
wow my fingers are hurting just looking at all those little pieces. you must have had on your granny glasses to see the tiny grooves
Not only see the tiny grooves but measure them as well