I’ve been on both AZS boards for a long time...had some work done by Derek when his shop was off of Country Club, but never got the full story of why/what happened to AZEX. He built some killer AK’s and was always helpful.
He is out of the business due to personal reasons. He is driving a truck now from my understanding. Derek was(still is) the man, it’s a bummer he is not in the gun business anymore.