Hop up Gummi WE open Bolt
It's designed with the concave-Hop concept in the sense of the longer contact patch and more concave. Using heavier rounds and setting the hop up well, it will have remarkable range increases, as well as fps. Reason being that with the long contact patch nub, it can't effectively allow the bucking to deform to fit the bb's profile as it gets squeezed through the bucking, it tends to allows pellets to fly farther and fall less. The inner diameter of the A+studio hop up bucking is smaller and tighter than any existing hop-up rubber, so it will have much better air-sealing and higher fps.