10 AG, +1 AP armor, jet, 2 levels Action Boy = 15 AP, Bonus Move (2 movement points in TB) = 17 AP. If swap from grenade to active slot containing a +1 AP item, then one more AP = 18.
Is there only one level of Bonus Move?
Implants don't increase AP.
Cookie? +1 AP = 19 AP.
Perhaps some perk that reduces AP needed for throwing grenade?