Modify

GB-05-63 0.25g or above heavy BBsFeatures:Friendly use. No more modify.Efficiently improves the accuracy.Stabilize and extend the trajectory.

GB-05-63 0.25g or lighter BBsFeatures:Friendly use. No more modify.Efficiently improves the accuracy.Stabilize and extend the trajectory.

HP-02-01 Adjustment button with o-ring to assure tightness.Redesigned pressure plate by adding an adjustment gear making accurate adjustment easie...