I will tell you what happend to Belov after the gunshot:
To those that do not know Brigada is based on Books
There are more then 7/8 books about Sasha Belov
The tv series is base don the first two books right now I have read them till the 5th book [THat is what is released in Bulgaria so far]
Spoilers------------------------------------------
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For those of you that want to know what happend
There was gunshot at the end indeed to be exact 2 gunshots and Sasha Belov was left to die at a junkyard but he survived and start living in the junkyard where he found other friends and his first love i dont remember her name
The guy that killed him was sent by Schmid who took over the company and later he become lover with Sasha`s wife.
There is much more to the story if you want me i can type it all