Click on each poster to open for downloading large image.
40 mm VOG-25, Russia, training poster.
Grenade training poster, Russia
30 x 28mm Grenade MG, AGS-17
Source = https://forum.guns.ru/forummessage/18/215693.html , above images uploaded there by ‘Hooke’.
Czech training poster for 7.62 x 39mm cartridge types:
Some Czech signal cartridges. (I don’t remember the source)