Dawg 180, the glass on the Kobra is first rate, very clear at all times. Battery life is actually pretty good...but there are 2 kinds of Kobras. The older ones, like on my SAR 2, take AA batteries...the newer ones, like in the pic, take a camera battery that you'll most likely have to go to Radio Shack to get. I've actually left that damn sight on overnight and still been able to use it the next day...but it never hurts to have spare batteries on hand lol.
Bear in mind that the Kobra is issued military spec equipment...so it's as heavy duty as you'd expect. I knocked mine off my workbench on the concrete floor here, and it didn't even scratch it.
Another cool thing about the is that the dot is only about 1moa...but you have the choice of four reticles: dot, dot over inverted chevron, inverted chevron, wide 4 post reticle with the top post missing. With only the dot, and the brightness turned down, you can see all of a standard SR1 target black area...which makes it easier to shoot more precisely, imho, than you'd be able to do with a 4moa dot.
This is a 25 shot group at 100 yards benched, semi rapid fire...basically, I just allowed myself to re-acquire the black and let 'er rip. These were my last 25 rounds, so I didn't have a chance to nudge the sight a click or 2 left like it needs. All in all, though, what more do you need out of a red dot sight?
[img]http://img.villagephotos.com/p/2003-5/188491/target1.jpg[/img]
I got both of my Kobras from Tantal, who is about as good a guy as you'll ever want to deal with.
[url]http://tantal.kalashnikov.guns.ru/[/url]