GHK M4A1 Hop-Up

Maple Leaf Hop-Up for GHK M4

With "Hot Shot" hop rubber 70 degree for GHK GBB Hop chamber series
Dual adjustable system, user can adjust the hop from the original outter barrel
Or adjust the fix screw from loading chamber with M1.5 allen key (just like WE / VFC GBB series)
The hop chamber also fit with some VFC M4/AR15 GBB series
with GHK GBB HOP Chamber tensioner