I wound up with one of these at the last gun show... it was mounted on a scope that I wanted, and the guy made me a package deal for everything that was too good to pass up. It seems like a pretty slick little micro holo sight... I like the easy controls, auto bright/dim, and auto off. I am giving some thought to putting it on a semi auto sniper build I'm working on in a 45 degree offset position as a backup/emergency close range sight, but I don't know anything about their quality and reputation for reliability. This will be a serious purpose rifle, and I don't want any junk on it. So are these things any good? Would you use one as a backup sight on a serious use rifle?