Luth-ar UR-01-M16-A A1 Upper Receiver 223/5.56mm Aluminum Black Hardcoat Anodize Receiver for M16 $194.52 UR-01-M16-A show more like this 14.99 Locked Loaded Luth-ar UR-01-M16-A A1 Upper Receiver 223/5.56mm Aluminum Black Hardcoat Anodize Receiver for M16 $223.75 UR-01-M16-A show more like this 19.95 Treasure Chest Gun Shop & Indoor Range