Ever Buree - эвэр бүрээ - Mongolia Flute Instrument - ᠮᠤᠩᠭᠤᠯ ᠤᠯᠤᠰ

"Horn Trumpet" part of the clarinet family. According to Wikipedia The ever buree was invented in the 1970s, and frequently appears as part of the standard Mongolian orchestra.

I found some pictures and YouTube videos but unfortunately no construction plans or detailed descriptions of the mechanism. If you know where I can find construction plans please leave a comment or link in the comment, thanks. I looked at some clarinet and saxophone blueprints and then tried to recreate the Ever Buree as well as possible using videos and pictures, identically but also functionally.

It is held like a saxophone, with the end with the sounding bell held under the right arm

I think it's a very nice instrument