Xbox One Controller Loud LB, RB Buttons

Is this normal? Fake controller? My other Xbox One Controller which i got with Xbox One console doesn't have loud LB, RB buttons.

Everyone's definition of "loud" is going to be different. So we can't really say if your controller is abnormal without hearing it in comparison to something else.

But if it's significantly louder than your other XBox One controller then it may be defective or fake. Where did you buy it?