03/19/2005. Remarks by Nico Braas: "Designed as an interceptor, armed with a big 1.46 in (37 mm) Covertry Ordenance Works (C.O.W.) gun, Type 161 was flown for the first time on January 21, 1931. The fighter was of a vey advanced design with its pusher propeller, twin boom tails and light-alloy construction. The big C.O.W. gun protuded from the nose section in a 45° upward position.

In the picture we see Type 161 still without its gun installed and without any markings. With the C.O.W. gun installed, it later fley with RAF s/n J9566. Although the flying qualities of this fighter were good, the C.O.W. gun was not further adopted for operational use, and only a single prototype of Type 161 was built."