No twin-hulled glider was built, but each company constructed the prototype of a single-hulled amphibious glider, the XLRA-1 by Allied Aviation and the XLRQ-1 by Bristol Aeronautical. The two prototypes made their first flights in early 1943, but by the time they did the Navy and Marine Corps already had concluded that the use of gliders to deliver Marines to beachheads was impractical. No further examples of the two glider types were built, and the Navy officially terminated the amphibious glider program on 27 September 1943. Testing of the two prototypes continued until early December 1943, apparently in connection with the development of a glider bomb.