Bravo BCMGunfighter AR-15 Quad Rail 10 6061-T6 Aluminum Black Hard. Includes T L R and B recoil slot markings on all four rails to aid in repeatable set up for the end user. This proprietary patented mounting system (US Patent 8904691) includes a mechanical index to the 12:00 rail and positions mounting hardware to mitigate the movement caused by heat generated by the weapon system. Specifications for Bravo Company QRF Quad Rail Free Float Handguard: Manufacturer: Bravo Company MFG Color: Black Gun Make: AR Platform Gun Type: Rifle Handguard Style: Quad Rail Gun Rail: Picatinny Quantity: 1 Features of Bravo Company QRF Quad Rail Free Float Handguard for AR Rifles: Free Float Quad Rail eliminates loads from barrel reducing the deflection for more accurate shooting. Precision Machined Aerospace 6061-T6 Aluminum Alloy for high strength and lightweight. Proprietary engineered profile offers additional cross sectional strength. Steel Barrel Nut (same KMR MCMR and QRF series) to resist movement under heat. Hard Coat Anodized per Mil-A-8625F Type III Class 2 Package Contents: Bravo Company QRF Quad Rail Free Float Handguard The Bravo QRF12556BLK BCMGunfighter AR-15 Quad Rail 12" 6061-T6 Aluminum Black Hard is a quality addition to the Bravo Company MFG lineup. For more great deals on AR Handguards & Forends by Bravo Company MFG please browse our Bravo Company Mfg Gun Parts page.