Abstract: The invention is an extension accessory provided for extending the effective working range/reach of an electric screw gun by adapting the extension accessory to receive and attach to a screw gun to place the same closer to the work surface. The extension accessory is adapted to removably mount and attach to an electrically powered screw gun. The extension accessory comprises a shaft disposed for orientation about a shaft axis that is substantially parallel to the bit rotation axis of the screw gun. The shaft includes a gripping end for gripping the same by the user, and a coupling end for fixedly mounting a screw gun thereto. A first retaining band is supported from the shaft at the coupling end for receiving the body of a screw gun therethrough. Once the body of the screw gun is so received, the first retaining band is adjusted to urge the body of the screw gun toward the shaft for fixing the screw gun thereto.