Ok, so first things first... Discloser. I have had this gun for a little over a year. When I got it, I did quite a bit of mod work including shims, new high torque motor, new helical gears, new 10 metal tooth piston, new magic barrel, a 140 spring, and I have played around with several hop-ups and nubs. I never really used the gun stock, but I do have alot of experience taking this thing down and what the internal qualities are like.
When I cracked this thing open, the first thing I noticed was how nice the gearbox itself is. Things just fit. On cheaper gearboxes I always seem to get that explosion of peices that always throws my trigger assembly all over the place (I HATE PIECING THE TRIGGER ASSEMBLY BACK TOGETHER). Putting things back in the gear box was also a breeze. It was overall the best gearbox I have ever worked with.
Next thing I noticed were the self shimming gears. I never used them, but the gun did seem to run just as well before I added the new gears and shimmed it as it did after. That tells me that things were being held pretty well by those self shimming gears. They are something that I am waiting to throw into another build and test.
Everything else seemed pretty standard to me. The only other thing that jumped out at me was how bland the motor was. I am not expert on motors but it seemed to have the same amout of resistance as a very cheap china motor I pulled from an s&k. There is nothing wrong with that, but it struck me as cheap for how nice the rest of the gun was.
As for exeternals, this gun is exatly what you see. I love the free float rails (very light) but I hate the silver barrel. The stock is a standard crain stock. The functioning bold catch is cheap, and while mine reassembled perfectly, that function never worked again. In all fairness, I am of the school of thought of "keep it simple and reliable".
The gear box is very very nice.
easy to work on and a fun to see what you can get it to do
the gun looks great
the rail system is awesome
The motor lacks luster for the price tag
The bold catch is kinda cool... but i dont want bells and whistles