Maple Leaf GHK Glock Hop Chamber For GHK GBB Pistol Series

- Umarex - GHK Glock version 
- Hop wheel + Vertical tensioner design to decrease the original parts tolerance 
- Vertical tensioner with curve shape design for good setting of BBs 
- Stable Hop effect and better air-seal 
- Suitable with Maple Leaf GBB/VSR Hop rubber and pistol inner barrel or "Crazy Jet" inner barrel 
- Addtional Vertical tensioner for backup or user can modify it by youself 
- Fit for GHK GLOCK Pistol Series