The Harbringer is tiny and has the blades special ability as primary attacks, +1 enhanced.
The dmg is fine, but the hit must be +8 since tiny creatures get dex as hit and not strenghts.
Bab +3, Tiny +2, Dex +2, Enhanced +1 = +8
https://www.d20pfsrd.com/bestiary/monster-listings/outsiders/archon/archon- harbinger/
Am i right?