Deadlywind Fibur-X Tippmann A5 / X7 Carbon Fiber Paintball Barrel The Deadlywind Fibur-X carbon fiber barrels are ultra-lightweight, accurate, and quiet. They utilize the Freak replaceable inserts, so one barrel and a few inserts will do the job of multiple barrels. And with the ability to affordably swap to different threads, the Fibur-X has you covered! The Fibur-X barrel system consists of three parts - The thread adapter to match your gun type, a carbon fiber "main-barrel" which is the main part of the barrel (sets the length), and a Freak insert which sets the bore of the barrel. Weighing in at an average 64 grams (77 grams with insert), the Fibur-X is 2x to 4x lighter than other replaceable insert barrels. And it it is strong enough to be driven over with a car. (Deadlywind already tried this for you, so you don't have to!) Unlike other carbon fiber barrels, the Fibur-X barrel is built with a unique 3 layer construction. 2x2 satin Twill external, uni-direction fibers laid up in a strong multi-vector pattern, and then a super slick "Silkfiber" inside that can be safely swabbed. CNC align-bored segment for the insert area, CNC-ported with 3 rows of straight ports, and then hand-assembled and quality checked - You can't get any more accurate. Note - You MUST use a Smart Parts, GoG, Luxe, or Empire "Freak" insert with this barrel. You must have at least a "Thread Adapter", a "Main Barrel", and a "Freak insert" to use this barrel system.