If you want to disassemble the bolt for cleaning!
REAL EASY
With the bolt in and the bolt handle down, insert pin of some sort (I use the back end of a small drill bit) into the hole on the rear, side of the bolt shroud!
The pin should go in from right to left!
With the pin in place, lift up on the bolt handle, push forward on the safety and remove the bolt from the gun!
Now, with the bolt out, unscrew the rear part of the bolt (by hand), no tools required other than the pin!
With the pin in, the spring tension is held in place for easy disassembly!