[3] During the later stages of World War II, Finland received large shipments of German Panzerfaust (F1 and F2) and Panzerschreck.

Finland's forested areas were seen as optimal terrain for light, highly portable anti-tank weapons, and this supported the efficiency of such short-range weaponry.

[3] FDF however had already developed venturi effect recoil dampers to the Panzerschreck during the WWII to lengthen its range, and they were planned for the Panzerfaust as well, which were also tested in the early 1950s.

[3] The Raikka design was criticised by the FDF development team as obsolete and not used by other countries, as well as making the launch tube wear out quicker.

The leader of the FDF team Puronto commented, that he "would support the solution offered by Liikkanen, if it had more pros than cons".

[3] Commercial designs (such as the Raikka weapon) were seen problematic, as they could not be manufactured by FDF without negotiations by the intellectual property holder.

[2] If capped, the fragmentation grenade can penetrate obstacles such as light doors, bushes and windows before exploding.

The gunner should have at least two metre clearance behind, so the backblast wouldn't be deflected back to the shooter; shooting from an enclosure was forbidden.

The 55 S 55 was the standard anti-tank weapon of the Finnish Army from the late 1950s but has been phased out since the 1980s giving way to M72 LAW and Apilas.