The T-Series handguards from Midwest Industries are one piece free floating handguards designed for optimum performance. Made from 6061 aluminum these handguards are sure to hold up and provide long term dependability. Everything needed for installation is included: Barrel Nut, Barrel Nut Wrench, Torque Plate, and Hex Keys.Feature:4140 heat treated barrel nutFeatures patented 4140 heat treated torque plateHigh quality MIL-STD 1913 picatinny rails, T-marked for accessory locationProvides continuous monolithic look with full length upper railTwo integral anti-rotation QD sling sockets2.15 inches wide x 2.43 inches tallFully dehorned and deburred100% made in USA keeps America workingMI lifetime warranty