[1] It was built on the chassis of the Hispano-Suiza HS.30, which was also used on the Schützenpanzer SPz 12-3, and armed with twin French SS.11 antitank guided missile launchers.

Only one of the missile launchers is visible from the outside at any time, however, as the other is retracted into the hull to be reloaded when the first is ready to fire.

The twin mounted launchers for the SS.11 anti-tank guided weapons were the primary armament for the Raketenjagdpanzer 1.

The weapon was wire-guided and the gunner continued to control the missile via a small periscope after launch.

The Rolls-Royce B81 Mk 80F engine, which could develop 235 hp @ 3,800 rpm, was chosen to power the Raketenjagdpanzer 1.