Definition: In this task, you're given reviews from Amazon's products. Your task is to generate the Summary of the review.
Input: This set of iron sights for my AR-15 would not even clamp down tight on the picatinny rail Mike the owner or person I was speaking to not sure which he is thought possibly my picatinny rail was not in specification come to find out the Chinese sites that are passed off and sold as by an American-owned veteran-owned Corporation are actually from China as I found out later everything else dagger sells is from China he also told me to check my uppers make sure that was not what was out of spec in my opinion what is out of spec is passing these products off as American owned and yes I guess he is probably a vet but these are farthest thing you can get from American made products will never buy anything from dagger defense again

Appears that all of this company's products come from China claims to be American owned & Operated