With the bolt stop removed the safety can be pressed from the right side and slid out the left.
This is the position the safety is in when first slid out. It should be slid back in this position for right handed operation.
If switching the safety to left handed operation, flip the safety to this position before sliding back into place.
If during reassembly you find the hammer will not fall when pulling the trigger, check to make sure safety was installed one of the ways shown in the last 2 photos and not upside down.
The rest of the trigger assembly is now free to be removed from the grip.
Grasp the front of the trigger assembly and pull up.
With the front of the assembly pulled up the rear can be slid out to finish removing.
To place the trigger assembly back into the grip assembly the hammer will have to be uncocked as shown. Always control the hammer when uncocking. Letting the hammer fly forward may cause damage to the plastic parts.
Reassembly of the trigger assembly into the grip assembly is done with the hammer in the uncocked position. Slide the rear of the trigger assembly into it's place in the grip assembly, then push the front of the trigger assembly into place. Little force is needed.