User blog comment:Homuhomu123/Trigger Rates & Effectiveness of Anti-Air Cut-In (AACI)/@comment-101.184.172.178-20150829065126/@comment-26316660-20150908051747

>3 accoroding to jp wiki, which means you're better off using API 5 or API 8 if you have a HAFD.

wait, was that came from her Special API value? from this setup?

The setup required is:  High-Angle mount  (any)  , plus  AA Gun  (any)  , plus  AA RADAR