Luth-AR A 2 Rear Sight Kit, Fits A2 Upper Receivers For AR-15 Firarms, Black UR-21K Out of stock. Check back later... $69.95 MSRP Price: $67.05 Notify me when this item is back in stock (log in required) Description Details Reviews Shipping info Luth-AR A2 Rear Sight Kit, Fits A2 Upper Receivers For AR-15 Firarms, Black UR-21K UPC: 812058031383Manufacturer: Luth-ARModel: UR-21KCategory: PartsOtherSightsStock: 0Unit/Measure: ea This item may be shipped directly to your home address, unless you live in a restricted state.