Midwest Industries Combat Rail T-Series, Free Float Handguard, 10 Length, Quad Rail, Includes Barrel Nut and Wrench, Fits AR-15, Black Anodized Finish MI-CRT10 The Midwest Industries T-Series Combat Rail Handguard features Mil-Spec M1913 Picatinny rails" T-marked for accessory location" along its entire length. The handguard has been fully dehorned and deburred for user comfort" and features two anti-rotation QD sling swivel sockets. Comes with barrel nut" torque plate and barrel nut wrench. Midwest Industries is a proven leader in the firearm industry. Made in America" focusing on the small details to make your rifle platform better.