Air Seal Chamber for WE GBB Open Bolt rifles and Marui VSR
Suitable for WE Open Bolt. gas rifles. 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. It's designed with the concave-Hop concept in the sense of the longer contact patch and more concave.
A+Airsoft is a Taiwanese manufacture for innovative precision parts for Airsoft GBB pistols and Rifles specializing in designs to improve accuracy and range.