Clear the chamber. Push the button forward on the underside of the rear end of the forend.
While holding the bolt to the rear, rotate the barrel assembly 90 degrees (I forget which direction). Once in two halves hold just the receiver/stock assembly. Remove the mag tube. Pinch the bolt handle towards the trigger guard and then slide all of that forward in the receiver. The bolt and trigger group are a complete assembly and come out for cleaning.
