Knights armament 45 degree sites break easily. - Knight's Armament Offset Fixed Iron Sight

Don't waste your money unless you want difficulty trying to get your sites fixed after premature breakage. They broke after flipping them up three times. Knights Armament refuses to send me a new base for the one that broke. I've asked 4 times and have been given no help each time for not having a receipt. Use another company's sites and you won't regret it. To pay this much money for sites that break is ridiculous, especially when they give you zero options to get them repaired.