The Shark bucking and Fishbone X Balancer were originally developed for the MadBull 470 CO2 powered drop in mechbox to prevent double feeding of BBs and to prevent BBs from rolling out of the barrel.
By having 3 special "fins" inside the bucking, Shark Hopup Bucking can hold one and only one B.B. tightly in the chamber. In the mean time, to our surprise, we found that this bucking could enhance the velocity on some AEGs. Not all AEGs will have the same results and the result could be different from one AEG to another. Unfortunately, we don't know the exact reason because each AEG has its own characteristics. However, we do believe that the friction (from 3 fins) applied onto B.B. will increase and slightly build up the pressure behind the BB before it starts traveling down the barrel thus enhancing the velocity much like a blow gun, spit balls with a straw or similar concepts.
Great product for use with Wolverine SMP, Wolverine Hydra, Protech MKII and Polarstar Jack.