It's "Attack Receptor" on JP
basically work like any receptor but it's for might, precision, casting or deftness affixing.
It makes affixing any of those 100%
For example:
- Main Unit: Junk augments
- Fodder 1: Precision VI + Junk augments
- Fodder 2: Casting VI + Junk augments
- Fodder 3: Might VI + Junk augments
- Fodder 4: Attack Receptor + Junk augments
Since you have attack receptor in the mix -> you can affix all of those [VI] augments with 100% chance
Without attack receptor, you might need [Might VI] x3 to get a 60% chance to affix it somewhere else