I somehow must have missed this Vespa in our local showroom in Southend on Sea in the 1960's, where it most certainly would had an effect on the local rockers!!!!!!!!
The Vespa 150 TAP is an Italian Vespa scooter modified to transport a M20 75 mm recoilless rifle, which was used in the 1950s by the French Airborne Forces (Troupes aéroportées, or TAP). It was produced by Ateliers de Construction de Motocycles et Automobiles (ACMA), a licensed assembler of Vespas in France, in 1956 and 1959.
Its mounted M20, a U.S.-made light anti-armour cannon, was very light when compared to a standard 75mm cannon but was still able to penetrate 100 mm of armour by so-called HEAT warhead. The recoil is counteracted by venting propellant gases out the rear of the weapon which eliminated the need for a mechanical recoil system or heavy mounts, enabling the weapon to be fired from the Vespa frame.
The scooters would be parachute-dropped in pairs, accompanied by a two-man team. The gun was carried on one scooter, while the ammunition was loaded on the other. Due to the lack of any kind of aiming devices the recoiless rifle was never designed to be fired from the scooter, the gun was mounted on a tripod which was also carried by the scooter, before being fired.
Despite an unmistakably different profile, the Vespa 150 TAP differed little from the civilian Vespas of the time. It used a 150cc two stroke engine made by ACMA from the Vespa 125, but with different bore and stroke to the Vespa 125 engine from the factory. Other than the engine, plus the M20 light anti-armor cannon, rack and ammunition mounts, the only major differences it had to a standard Vespa, was a strengthened frame and lower gearing which gave it a top speed of just 40 mph.