how to zoom gun in IGI 1 game? : you can’t zoom gun in all weapons of IGI 1 Game, only some gun has this zoom feature.
in MP5SD 3 – Press one-time Right-click on the mouse to zoom.
Also, read – how to open all missions in IGI 1 Game
in Dragunov ( Sniper) – Press right-click on the mouse and hold to zoom.