Free actions do not consume your primary action, move action, or reaction.

You can perform as many free actions in a round as the GM considers reasonable.

Common Free Actions

Free ActionNotes
Shout or talkShort phrases are fine; long speeches are not guaranteed.
Drop a weaponLet go of an item.
Drop proneFall prone immediately.
Drop shieldLet go of or discard a shield.
Draw a weapon in each handRequires an ability such as Quick and the Dead rank 2.
Deflect with weaponRequires Weapon Mastery (Precision) rank 3 or another rule that grants this.

Free actions can still have consequences. Dropping prone may help extinguish fire or avoid an attack, but it leaves you prone. Speaking may reveal your position. Dropping an item may put it in reach of someone else.