Unload the rifle and move the bolt forward.
Move the safety to the upright middle position.
Remove the bolt.
Press the stud in on the right (under my thumb) and un-screw the bolt body.
Bolt body and firing pin assembly seperated.
Place the tip of the firing pin in the bolt disassembly disc.
Push the bolt sleeve down and give the cocking piece a quarter turn to the left or right. When aligned correctly the cocking piece can be pulled off.
Fully disassembled bolt
Fully disassembled rifle.