R/T-Cyclone Hole: No; FVA: No. This tube is for users with custom applications; not recommended for inexperienced players. Same as the regular Red Hot Power Tube, but with no R/T-Cyclone Hole or FVA hole. A "blank" power tube, but precision CNC machined aircraft aluminum with incredible micro-finish! Use with stock valve and internals. Includes one power tube and one CNC-machined Delrin hexadecagon front bolt. This product is a specialty item and does not work with all gun setups.