R/T-Cyclone Hole: Yes; FVA: No. This tube is for users with custom applications; not recommended for inexperienced players. JCS X7 "Goldmember" power tube SPECIAL. Same as the regular Red Hot Power Tube, but with no front velocity adjuster (FVA). Precision machined aircraft aluminum power tube features gold anodizing and incredible micro-finish. Use with stock valve and internals. Includes one power tube and one CNC-machined Delrin hexadecagon front bolt. THIS ITEM SHOULD NOT BE USED WITHOUT A VELOCITY CONTROLLING DEVICE (like the RVA) INSTALLED ON THE MARKER. This product is a specialty item and does not work with all gun setups.