The AAC Tri-lug is unobtainium if you have been looking, you know this issue. Well I found a group that is making one. The Hansohn TiRant 3 Lug Adapter for 9mm via Hansohn Brothers website.
It is built rock solid and their customer service and is second to none.
PB
It is built rock solid and their customer service and is second to none.
PB