Excellent craftsmanship.Here are a couple of pics of the magazine base plate notch after it was cleaned up with a file. I will likely take the time to setup a cutter in the mill to do these to save a bit of time in the future. Using a file on a single frame is OK, but too time consuming on multiple frames. I will Dykem the frames and clean up the machine checkering with a few light file strokes per line to make them extra grippy!!