Rise Armament RA905150BLK: This M-LOK compatible free-float handguard features a short Picatinny top rail for your front sight and six quick detach mounting points for great versatility. The thin midsection provides excellent comfort, while anti-rotation technology provides fantastic stability. This rail is manufactured from 6061-T6 aluminum and is durable and extraordinarily lightweight. Start your next AR build off right with reliable components from RISE Armament.