QUOTE (hydralover @ Jan 21 2010, 04:18 PM)
Shell, trigger assembly, spring guide, tappet plate, and cylinder head are different.
Gears, spring, piston, piston head, cylinder, anti-reversal latch, and bushings are the same.
Air nozzle depends on which AEG you have.
The JG M4-S has a VERSION TWO type gearbox. The "version 3" crap you hear means that it's the third version of the gun that has been released.
I'm hopping that's right, but I keep reading contradictory things about that.
Example: the 2009 models say "version 3", so if it's the 3rd version... why do they say that for the 2010 model as well (you'd think that's the 4th version as it's been upgraded once again with more metal parts). To make it the more confusing, some sites list the 2008 model as the "version 4". (I know, no Version 4 gearbox, right?)
This is from where I bought the gun...
I guess I'll find out the hard way when I try to install: nozzle, spring guide