Pump Arm Forend Liner, Crosman 1322 1377

This is a stiffening liner for the current narrow Crosman 13xx forend. It completely fills the hollow space between the forend shell, the metal lever, and the air tube. Helps eliminate that toy-like feel when pumping and holding the forend. Reduces the clapping noise, and provides a surface for applying an adhesive felt pad if needed. Minimal alteration of external appearance.

Remove the two screws holding the forend to the pump arm. Insert the liner into the forend. Slide the pump arm into t