What else could you want? - UTG Pro ACCU-SYNC Top Mounted Deployable Iron Sight

These are BACK UP sights meant to be used if your optics fail. For those that whine about them being cheap get over it and spend more money if that's what floats your boat. Like everyone else I found the button to be stiff and they didn't flip up without help at first but after operating them a few times they work just fine. Darn good value for the money IMO.