Remove the fore end. The action tube has 4 holes through it. Clamp the action in a padded vice and put a punch through the holes and twist the action tube off of the screw that holds is. You may need to heat the action tube to break the thread locking agent bond. Pull the action tube out of the action bar assembly and replace the O-ring while you have the rifle apart.
The Karma bus always has an empty seat when it comes around.- High Brass
There's battle lines being drawn Nobody's right if everybody's wrong
