This is four sights, three M4 rear sights and a flip up front sight. This is from the many years I’ve bought AEGs and changed sights. These are brand new and are perfect if you’d like a specific look on your gun. I am selling these for $5 each, and will bundle them with my other items for a discount or free shipping. I respect first come first serve loyalty and ship on the same day or next. Please let me know if you have any questions.