machine guns in the nose were supplemented by two added .30 cal.

guns mounted under the lower wing, far enough out to be outside the propeller arc (thus not needing synchronization).

[2] All these modifications added weight, so the lower wing span was extended by 9.5 feet.

The airplane was delivered to Wright Field for testing on 27 July 1927, but it quickly became apparent that the Packard engine did not have sufficient power to compensate for the 800 lbs of extra weight, the craft performing more poorly than its predecessor, and the project was quickly abandoned.

[1] Data from Fighters of the United States Air Force [3]General characteristics Performance Armament