Others
Flare Gun:
The Flare Gun in PUBG is a rare find in all the three maps that have been rolled out in the game yet (Erangel, Miramar and Sanhok) and is used to call-in a special supply-crate drop (when you are inside the white circle) or an armoured UAZ (when you are outside the white circle).
So This was the information about all the weapons avaliable in all the maps in the game.
Hope this information is helpful to you.