i feel the description is vague and i never noticed a difference with it on or off
I didn't see one either till I started using the optics. You flinch less when being shot by an enemy. Say your using the SWAT. One burst to the head will take out your target. If you are being fired at and are hit - your flinching will cause some bullets in that burst to miss. By having toughness on more of those bullets will hit your target even while being shot. It's truly very useful for any AR or weapon that you use optics with and expect some return fire.
I don't feed trolls and I don't read spam! Gamer tag: Spinal101