Well don't believe what the review's say, There sight's are for toy guns. I am on the 3rd replacement in the past year, it is lifetime but 3 times it failed. I bought as a tempory sight till I could save the 600.00 for a eotech. wasted a 100.00 $ of my money. Oh well live and learn , just wanted to let everyone know, who don't know. Don't be cheap like I was. Any way I feel better to vent. :hissyfit: Ordered eotech from brownells today. can't wait to get it.