Blem? What blem? This is a great sight for my pistol and my wife loves having the sight and target both in focus. Solidly mounted, it handles recoil just fine. This is the best sight for old eyes and folks who don't like to worry about dead batteries.
Sight arrived lose in a bag with screws missing, the storage box was in the bag but open and lose as well. Absolutely unacceptable packaging should have been shipped inside of a box with extra padding. The sight appears to be undamaged lucky, however that fact does not excuse the poor packaging for shipping.