I bought one regular black 80% lower and one skeletonized 80% lower from ar15 site. I didn't had any trouble dealing with the customer service in-fact they are very friendly and communicate back quick. Super fast shipping was greatly appreciated especially during the slow covid times.
Tip for consumers: If you see something out of stock, you can call them and ask to be notified. Customer service is very friendly and they do good job taking care of their clients.
Products used: AR-15 80% Lower Receiver – Black & AR-15 Skeleton 80% Lower – Black