Bad nitride finish - Alpha Shooting Sports ALPHA Marksman V4 Slide for Glock 17

This was the second slide I purchased from alpha shooting sports. The first was the v4 g19 slide but stainless steel. That slide looks and functions great. The g17 v4 slide I just received has good machining but the nitride finish has flaws all over. Spots all over where the nitride didn't take very well. Looks terrible. Basically looks like it has water stains all over it. These aren't small spots either and will not rub off with cleaner or oil. Instead of black they look like a really dark green shinny spots and patches. I was really excited to put this pistol together but it looks terrible and will need to be returned. Why a company allows something like this to be sold as a non blem is beyond me. Seems like alpha is pushing products out as fast as possible with poor QC to meet the demand for glock parts