Hello all, Was checking for some price drops on a website I go to a lot and noticed that the full size 320 nitron with siglight night sights is $135 more than the 320 without the siglight night sights. Do you think the price increase is worth it? Do you think having the siglight night sight is...

I'm looking for some help/feedback on the MK25 P226. Purchased in Feb 2014 from Rural King. UPC on the box is dated 8/19/13, with a SN # UU7926XX. I checked another MK25 at the store and it showed the same characteristics. The siglite sights are dim, very dim. In complete blacked out...