The MQM-36 was the most evolved of the BTT family, but retained the same general configuration as the other members. It was larger and more sophisticated than the first-generation OQ-2A series, and was powered by a more powerful flat-four four-stroke McCulloch piston engine with 72 horsepower. The MQM-36 carried Luneberg lens radar enhancement devices in its wingtips that generated a radar signature of a larger aircraft. The radar reflectors (Luneberg lens) wasn't used by the US Navy as the air search radar interfered with the control signals. Thus the air search radar was not used.