13" Alpha One AR-15 M-Lok Free Float Rail Handguard-HGML03

Constructed of 6061-T6 airplane aluminum The barrel nut of this hand guard has 1/2"x28 thread pitch, compatible with standard 0.223/5.56 rifle Completed with a hard coat black anodizing Steel Barrel Nut made from high strength steel and coated 3 side M-Lok around the body, Magpul Licensed M-LOK Mounting System 2 Quick Detach Points on the rear position of the handguard One Free QD Push Button Sling Mount included Clamp on Barrel Nut System with Retention Key keeping the handguard from sliding off One piece CNC accurate construction Barrel nut make up torque 35 ft.lb Overall Length: 13 inch. Inside Diameter: 1.38" (35mm) Net Weight: 13 ounce Barrel Nut make up wrench available at this link