Selective reload

Hold Shift while zoomed in with right click to hold breath and steady aim

Open inventory

Inspect your weapon and look for your firing mode

Mumble, if AI is nearby, they will respond to you with a voice line

Fold / unfold your stock

Lower your helmet visor

Switch between stacked sights / scopes

Toggle flashlight

Take out the mag and estimate the remaining ammo

You can drag and drop items from your tactical rig or pockets onto your quick access bar (keys 1 through 0), this also applies to grenades

Quick melee attack while holding a firearm

Toggle laser sight

Switch between fire modes

Blind fire to your left

Lean left

Instantly go to minimum speed. Press again to return to your previous speed

Switch reticles in your red dot sight

Quick reload. This will toss mag on the ground for a quicker reload. Do not forget to pick up your mag afterwards

Sprint (make sure Hold to Sprint/hold breath setting in Settings > Controls is enabled)

Do a slow right lean

Lean right

Move through your stance from standing to crouching to prone

Select a grenade from your quick access bar (keys 1 through 0) to take it into hands to be able to time your throw

Crouch

Go prone. When prone, return to your previous stance

Do a slow left lean

Blind fire above you

Throw grenades

Look into the chamber to see if there is a bullet

See the remaining time of the raid and get a feel for if it is still worth to check on the early objectives