Modify Flat Hop Up Bucking - for 0.25g or above heavy BBs

Modify Flat Hop Up Bucking
FOR HEAVY BBS 0.25G OR ABOVE
The Modify Flat Hop Up Bucking designed in Japan and made in Taiwan.

Modify Flat Hop Up Bucking features stablizing the hopper and improve the accuracy when using heavy BBs (0.25g or above heavier BBs).

The Modify Flat Hop Up Bucking Features:

Friendly use, no more modify
Efficiently improves the accuracy
Stabilize and extend the trajectory