The ejectors for the SPR 310 are controlled by set screws located on the curved portion at the front of the receiver. The right side set
screw controls the ejection of shells from the bottom barrel. The left side set screw controls the ejection of shells from the top barrel.
The set screws for the ejectors are preset at the factory for automatic ejection of fired shells when the action is opened. In the automatic setting, the slots in the set screws are oriented in a vertical position running perpendicular to the length of the barrels.
To disable the automatic ejectors, open the action and turn the set screws clockwise 1/4 of a turn so that the set screw slots are in a horizontal position parallel to the length of the barrels.
To return the shotgun to the automatic-ejection mode, simply turn the set screws counterclockwise 1/4 of a turn to their original position with the set screw slots oriented in a vertical position perpendicular to the length of the barrels.