Welcome to the Forum
You are asking a scary question.
One that many of us may not want to answer because you are new to the Forum and we have no idea of your skill set or the tools that you have on hand
Why do you want to remove the barrel?
The barrel is not a part that is serviceable by the end user. The barrel's removal is not listed in the instruction manual
Barrel removal and installation is a job for a gun smith
Do you own a spanner wrench?
That is the tool that is necessary to remove the barrel nut.
Once the barrel nut is removed, just slide the shroud off the barrel.
Then the barrel can be unscrewed from the frame.