The missile was tracer guided using radio controlled manual command to line of sight (MCLOS), which meant that aiming had to be done separate to piloting, either requiring a two-seat cockpit with a dedicated missile gunner, as per the Saab 105, or a central computer which could control the aircraft during guidance, as present on the Saab 37 Viggen.

Manual command guidance required a propulsion system with smokeless exhaust, so the pre-packaged liquid rocket engine was chosen.

It used high-density storable hypergolic propellants: inhibited red fuming nitric acid (IRFNA) as an oxidizer and hydyne (mixture of 60% UDMH and 40% DETA) as a fuel.

Pressure-fed engine had a combustion chamber made from aluminium alloy with inner layer of silica-phenolic ablative material.

[2] There also existed inert variants for mounting and flight training, painted in green with the text "blind" on the side.