In the front left side of the camera, there is a large black screw. Place your fingernail into the indent going across the screw, and use it as leverage to turn the screw counter-clockwise.

Once it loosens, drag your finger downwards against the left side of the screw to quickly unscrew it.

The screw will not fully come out, so once you think it's out of its socket, gently pull the black plastic action grip to the left. It should very easily slide off.

If the action grip does not easily slide off, that may mean the screw is not fully loosened, yet. Keep unscrewing it and try again.