Link to Premier strip. Note: you do not need any special technical aptitude to strip this pistol, just normal manual dexterity. If you can't tie your shoe laces, I wouldn't attempt it. If you can, you'll have no trouble.
This is the bit you need:
"Undo barrel pivot lock screw and barrel pivot and lift barrel up and slide cocking arm out of its slot. Undo endcap (keeping pressure on ) and remove along with mainspring and piston."