That is a nice sharp knurl, but as for the knurling being sub par On DC, i have intentionally done a similar knurl. Referred to as “volcano” in the bar bell world. And it has a purpose.
My theory is that with too much grip there is more of a chance of rotating the handle out of place. This is why FFT handles rotate out all the time. That OEM style Of pin that holds the detent, is not meant for a knurled handle IMO.
So for my Benelli M4 charging handle, I wanted to decrease the chance of rotating out and also less sharp on skin, thus the “volcano”.