引用:
原帖由 gino 於 7-5-2008 11:03 發表
the orginal gear box too weak. even you play M100 spring. when they made the gearbox mode it have bubbles. so you need to change more stronger gear box. on my SCAR i change everything from inside ...
SCAR ver2 gear box seems little different with onther brand , which one i can buy?