Zero'ed distance for Factory Iron Sights?

[marklbucla]

Is there a standard range for the original setup of most companies iron sights? Or better yet, what is the intended distance for the setting of the factory iron sights?

 

[Lone_Gunman]

There is no standard that I am aware of.

 

[Island Beretta]

usually 25 or 15 yds...

 

[Standing Wolf]

There is no standard that I am aware of.

Actually, sights aren't set for any distance. They're simply put on the gun as manufactured.