| Manufacturer | Westland |
| Model | COW Gun Fighter |
| Modification | COW Gun Fighter |
| Country | United Kingdom |
| Years | 1930 |
| Type | Fighter |
| Main rotor diameter | - |
| Tail rotor diameter | - |
| Wingspan | 12.45 m |
| Length | 9.09 m |
| Height | 3.22 m |
| Wing area | 20.72 m2 |
| Zero fuel weight | - |
| Empty weight | 1186 kg |
| Maximum takeoff weight | 1792 kg |
| Normal takeoff weight | - |
| Flight duration | - |
| Engine | 1 Bristol Mercury IIIA |
| Power | 1 x 485 HP |
| Thrust | - |
| Maximum speed | 296 km/h |
| Cruising speed | 262 km/h |
| Rate of climb | 435 m/min |
| Practical range | 680 km |
| Service ceiling | 8960 m |
| Hovering ceiling | - |
| Crew | - |
