A+ Airsoft Hop Up Rubber for Marui / KJW / WE / VSR
A+ Airsoft Hop Up Rubber for Marui / KJW / WE / VSR .
Suitable for Marui, WE and KJ Works gas pistols. 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.