Exacto Ammo is a self-guided bullet that was used by the Ghosts around the time of the Raven's Rock coup. It works by aiming onto a target for about 4 seconds and the bullet will lock on and if it misses after being locked on the bullet will re-direct itself and might hit the target. Its downside is that it brings down damage which if staying in long range engagements and utilizing the ammo correctly that should not be a problem. It can be identified by the green tape put on the magazine.