good to have m120 in stock v3?
 

Ok so..Ive been getting tons of compliments on the AK in the field and my dad who is th main user of the gun just rapes ppl with it....so I thought....il put an m120 into it.

it is a stock ver3 cm02 kraken gearbox, with stock gears.

modiefied parts:
- nozzle
- polycarb piston
-sorbo pad
-ball bearing iston head
-ball bearing spring guide

I put an M120 into, will it be fine? (it sounds like it is shooting at same rof as before.

no problem, but honestly with a bearing piston head and bearing spring guide, it probably would go over 400fps easily

with the stock spring?

ya you can just use the stock spring(provided that it's firing at 370 right now) and add bearing piston head + spring guide + airseal nozzle

my kwa is shooting about 400-410 and compared to the ak with stok spring it outshoots it distance wise, thats why i put an m120 now its about the same...although the kwa is still straighter.

thanks for advice cheers.

stock cyma gears will probably strip with 120 spring. I had a stock JG spring in my cyma mp5 and a couple teeth on one of the gears broke off.