Spotted at the Ares Airsoft are these OctArms KeyMod Rail Systems... "The Keymod Handguard can upgrade your rifle with designed ergonomic as well as durable. The product features Keymod interface system enhances the rail’s comfort and functionality without the need for Picatinny rails surrounding your handguard. The product also offer a true free floated handguard that removes unnecessary weight and allows for a wide range of accessory placement.