AR15 7'' M-LOK Free Float Handguard rail with Picatinny rail Eclipse

  Material: T6 6061 Aluminum Length Choice:7" Weight: 0.65lb Barrel Nut Included Barrel Nut inside diameter: 1.25'' Barrel Nut outside diameter: 1.375'' (34.4 mm ) Heavy Super Slim M-LOK Handguard Rail Easy to install   SHIPPING NOTICE: Free Shipping from Dallas Texas. Please allow 48 hours for processing, and 3-5 business days for delivery.