Oryx Rifle Chassis Side Panel Kit. This polymer side panel kit is designed to replace the side panels that come on the Oryx Chassis and will fit all Oryx chassis systems for popular models such as the Remington 700, Howa 1500, Tikka T3, Ruger American and more. This kit is available in Black, Flat Dark Earth (FDE), OD (Olive Drab) Green and Gray for easy color customization of your Oryx chassis system.