Nolo could not find any decent instructions online explaining how to strip a Vz.58 fire control group, so he wrote a guide on how to do it …

You see, recently, I purchased a Vz. 58 steel trigger, to replace the plastic trigger my CZ-USA Vz. 58 came with. When I looked on the Internet for info on how to muck around inside the receiver, I found nothing, so I had to figure it out myself. Trying to remove the fire control group from this rifle without knowing how is really hard, and results in lots of unnecessary scrapes on your receiver, and a lot of fruitless banging and frustration. Removing the FCG after you know what to do, however, is really quite easy, if a bit tricky. I decided to write this to help people do it the easy way.