Ultra-Rigid Design Made to Minimize Handguard Flex – Made to reduce point of impact shift with popular lasers such as ATPIAL DBAL NGAL – 4140 Steel Heat Treated Barrel Nut- 2.250 Long – Barrel Nut and Wrench Included – Features Patented 4140 Heat Treated Torque Plate – 13.5 Top rail length – 14.1 oz Installed Weight – 6061 Aluminum Type III Hard Coat Anodized – Continuous MIL-STD 1913 Picatinny Top rail – Two Integral Anti-Rotation QD Sling Sockets – Super Slim 1.5 Outside and 1.250 Inside Diameter – Seven Sides of M-LOK – 5-Slot Polymer M-LOK rail included – Fully Dehorned and Deburred – 100% Made in USA – Keeps America Working – MI Lifetime Warranty