Almost great - American Tactical Imports AR-15 Flip Up Top Mounted Deployable Iron Sight

These are great little sights and sit way flatter than my other Magpul BUIS Gen 2's. Really my only and main complaint is that these do not lock when up or down. If you plan to use these for anything other than the range, you might be concerned that if you brush your rifle up against something that these sights will flip down. I think that's a very real possibility. If only they had a locking mechanism when flipped up, they would be better than anything in this price range.