有冇師兄試過/估計呢set野打出黎幾多J？唔知會唔會鑲珠呢?
Systema CMB Complete Mechbox & A to Z Motor Set (M4/SR16 - M170) This Completed Mecha-Box Set with SYSTEMA brand new innovation perform the new level of your stock AEG.
Adopted by M170 Power Spring with all Systema supreme upgrade parts
Factory tune to offer best performance of "A to Z" Motor
Reach ~400FPS (Power Output may vary if used in conjunction with other parts) & offer speedy rate of firing few can contrast
