Hello, i have a tokyo marui mp5, and bought a sp120 guarder kit, after paying 150$ (shipping costs a lot to Turkey) i got the kit, installed it, and the motor couldn't make the gun work, which is great, so i opened the gearbox again, (remember i couldn't fire the gun)
The part that holds the piston is snapped into two, i'm quite sure i can't do that myself, i'm gentle with screws and have carpal tunnel on both wrists, lol don't have that much power.
Also if you look at the ball bearing inside the piston (which came with the kit) the bloody thing doesn't fit there. It can't rotate freely when i put the last metal gear back. The plate gets the bearing stucked.
It would be my mistake if this happened with "parts" but this is a whole kit, and the bloody ball bearing won't even work in the kit's own piston.
Isn't this hilarious?
Also i heard the guarder kits usually cause this jamming thing, i will try to replace my cells, but unless i make a li-poly battery pack, it's not really possible to fit more cells to mp5a5.
I'm already considering getting rid of the whole kit.