Knight's M-LOK Skeletonized Barrier Stop Assembly, Black Finish 31916 Out of stock. Check back later... Price: $71.37 Notify me when this item is back in stock (log in required) Description Details Reviews Shipping info Knights Armament Company M-LOK Skeletonized Barrier Stop Assembly, Black Finish 31916 UPC: 819064015802Manufacturer: Knight's Armament Co.Model: 31916Category: PartsOtherMisc AR-15 PartsStock: 0Unit/Measure: ea This item may be shipped directly to your home address, unless you live in a restricted state.