Abstract: A removable integrated target-illuminating device holder and grip apparatus and method thereof are disclosed. The apparatus mounts to an existing forestock of a weapon with an interference fit actuated by a single screw. The apparatus also includes a passage for receiving the barrel of a target illumination device. Resilient prongs are provided adjacent the rear of the passage to press the illumination device longitudinally along approximately the same axis as the weapon's barrel to prevent dislodgment upon movement of the weapon during handling or discharge, and to enable relatively quick, one-handed release and replacement of the entire illumination device.