Unfortunately, due to recent changes in production, we cannot give specifics on an item's production. Guntec USA does state on their main page, but you can contact them at the following link for more info.
https://guntecusa.com/contact/
Yes this WILL FIT Aero Precision Ar10 no issues as I run one.
Yes, it will fit any standard AR lower receiver including AR-10 lowers.
Yes, it will fit any standard AR lower receiver.