The two-spar wing of trapezoid shape, thinner by the fuselage, covered with a rimmed Wibault type duralumin sheet, was supported by two struts on either side.

The Bristol Jupiter VI FH radial engine mounted in front was fitted with a Townend ring and used a two-blade propeller.

During a presentation at the Paris Air Show in Le Bourget in December 1931, the aviation press, such as L'Air, The Aeroplane, Flight and Die Luftwacht acknowledged the P.6 as one of the world's top fighter designs.

Significantly, the P.6 prototype, piloted by Bolesław Orliński, won the American National Air Races held in Cleveland between the 29th of August and the 7th of September 1931.

The first P.7 prototype retained most design tratis of the P.6 with a more powerful supercharged Bristol Jupiter VII F engine, achieved better performance at higher altitudes.