This improvised device was designed to fire a 1 metre (3 ft 3 in) long metal propane cylinder with a diameter of 36 centimetres (14 in), which contained around 75 kg (165 lb) of home-made explosives and had a range of 75 to 275 metres (246 to 902 ft).
A similar design was used by the Columbian FARC in addition to the IRA who used the above example.
This might get me on yet another list but is there a book describing how they came up with this concept and how effective it was? Also, why use the big propane tanks and not the “little” 5 gallon tanks? I feel like they’d have better range and also be much easier to reload and hide in the interest of a shoot and scoot which insurgencies often favor with good reason.