Sticking an m120 inside going to tear it up?
 

Hey...

Quick question,

Would replacing a m110 spring with an m120 on a full metal SRC M4 be harmful? Im running with a 9.6v 4800mah

That's not much difference, only about 30 FPS.
So no, it won't "tear it up". Although it does have a higher chance of cracking the mechbox, but you're already running a high-ish FPS.

Currently its shooting around 350-360...

So I wont reach 400? thats my ultimate goal here.

you might, it really depends on the other components of you mechbox,

Dont forget, 400 FPS is a limit, not a goal, consider a tightbore, or a new hopup, more FPS wont give you more effective range

M120 should reach 400fps

If you want extra protection order a sorbo dampener for your gearbox it goes on the cylinder head


http://www.airsoftparts.ca/store2/in...oducts_id=1354

Absolutely amazing I have never seen a gearbox break with one of those installed. I've probably installed about 30 of them already
Makes your gun have a nice sound as well

Might? hmmmm....

this worries me but I really cant stay at my current speed. "Cant" as in dont want to :)

and while im already asking questions,

know of a 4x32 under $50?

not a good one, but sorbo is a GREAT idea, its cheap, and works wonders.

wish I knew how to help, from what I read, hopup and different nozzle will increase ur fps?

sorry, ill re-iterate, you should reach 400 with a M120, might even be over it.
If you want more FPS consider a tighbore, it will increase you FPS and give you much tighter grouping

Is that Zaems websight alright?

He has a beauty HFC scope for $45

NO.

Omg ZAZOOM again...

is the 4X scope for your M4? becuase that would probably be a bad idea...

No not for my M4

could you explain why?

Long story...... here read some.....http://www.airsoftcanada.com/showthread.php?t=62622

BTW: what generation is your SRC m4?