Type/Color: Armorers Wrench Size/Finish: For AR15/M4 Material: Steel AR-15 Accessory: Y Other FEATURES: Made In USA, For Mil-Spec And Pin Style Barrel NUTS, Fits Standard Flash HIDERS, Other FEATURES2: REMOVES Rifle Rec. EXTENTIONS, Carbine Castle NUTS, Works With 1/2 Torque Wrench (Not Included)