Empty Gun Weight

[ruckus3008]

I have notice that some websites have listed different weights of guns. Can anyone tell me the weights of certain guns empty with a mag in.
The ones I would like to know are:
Glock 19
Walther P99
Walther P99C
Sig P229
Sig P228

 

[10-Ring]

Empty? What good is an empty pistol? Isn't it more important to know what a gun might way on your hip? Or how well balanced it feels in your hands?
just curious