[Juha]

Hello Glider
On 20mm modified A/T rifle. The idea was to chop a young tree, fix the rifle on the top of the remaining trunk and voila, you have 20mm automatic AA gun ready to fire. Soldiers could carry the weapon, 2 men job, where ever they went. If I succeed to upload a picture, You can see how it was meant to be used.

On recoil, one young lieutenant, who was once my temporary troop CO (during my compulsory military service) once told me that when he first time fired an unmodified 20mm A/T rifle it broke his collar bone. He made a mistake to fire while standing in a narrow trench without being well enough prepared to the kick.

Juha