Well there are different types of crosshairs, but the most commonly used one is not accurate while a laser sight is more accurate.
Also using the laser sight in RE games looks better :p
Well, I've also this question before some days asked, and I'm to the result came, that the nature self not really decide can, Sova...~>
>>>>>>>>>>>>>>>>>>>>>>
Oh, late g'evening in China, Samy...~>