Sorry in advance if this was covered somewhere else - I did look and couldn’t find anything.

Do you need to use one of your two actions to exhaust an upgrades ability?

Trooper upgrade cards, for example MPL-57 Ion Trooper, does this mini use a standard rifle until you exhaust their Ion rifle or are the limited to only the use of the Ion rifle?

Regarding the weapon thing I think you will find it covered on page 46 of the rules reference in the last sections under Weapons (p. 45-46)

Exhaust is covered on p. 27. Not an action in itself

1 hour ago, clove3019 said:

Sorry in advance if this was covered somewhere else - I did look and couldn’t find anything.

Do you need to use one of your two actions to exhaust an upgrades ability?

Trooper upgrade cards, for example MPL-57 Ion Trooper, does this mini use a standard rifle until you exhaust their Ion rifle or are the limited to only the use of the Ion rifle?

They all have access to the standard weapons on the card or common use weapons like grenades. You just need them exhaust them if you are using the special heavy weapon.

Pg46

it. While attacking, these minis can use the weapons of the unit card they are equipped to.
» Heavy weapon upgrade cards include the ranges, attack dice, keywords, and other rules speci c to the weapon that the Heavy Weapon upgrade card grants to the unit.
» While attacking, only the speci c mini sculpted with this weapon can use it, though it may choose to use one of the unit’s other weapons instead.
• Grenade and hardpoint upgrades add another weapon option to a unit. Grenade and hardpoint upgrade cards include the ranges, attack dice, keywords, and other rules speci c to the weapon that the upgrade card grants to the unit.
» While attacking, each mini in a unit that is equipped with a grenade or hardpoint upgrade may use that weapon instead of another weapon on their unit card or equipped upgrade card.