Brigand Arms AR-10 Carbon Edge Handguard 9in Black. 9? 12? 15? BLADE & EDGE models). The Carbon Black rail matches our existing high standard for handguard strength and heat rejection and is capped with hard anodized aluminum rings for optimal impact resistance. It mounts on our standard ultralight barrel nut and includes multiple M-LOK mounting slotsto accommodate any accessory. These carbon fiber parts are conditioned for stability even during barrel heat cycling so front iron-sights and other aiming accessories remain accurate during any rate of fire. The 12 EDGE model(pictured)weighs only7 oz (INCLUDING barrel nut weight). These handguards are the second lightest rails on the market second only to Brigand's original open-structure rails Specifications for Brigand Arms Carbon Edge M-Lock Handguard: Manufacturer: Brigand Arms Color: Black Gun Make: AR Platform Gun Type: Rifle Gun Rail: M-LOK Weight: 6.6 oz Included Accessories: Standard Quantity: 1 Package Contents: Brigand Arms AR-15 Carbon Black 7 Inch Edge M-LOK Handguard Brigand Arms CB-9E-308: AR-10 Carbon Edge Handguard 9in Black