This is a very nice plastic case for storing charges for the Swedish RPG Carl Gustaf.
This grenade launcher is a masterpiece of military art. The Carl Gustaf is one of the best weapons of its class in the world and has proven itself to be a powerful and versatile combat tool for infantry in complex conditions. And all its components are works of art too. Swedish quality in everything.
And from them, you can create beautiful things in the style of Art of War that you will definitely like.
You can read more about the grenade launcher here: https://en.wikipedia.org/wiki/Carl_Gustaf_8.4_cm_recoilless_rifle
And in Ukrainian here: https://uk.wikipedia.org/wiki/Carl_Gustaf