This is my 2nd ICS rifle, my first being a M4 RIS I bought back in 2005 which was my very first gun. They've made a LOT of improvements to the internals since that version I had. I got this gun back in September 2013, and I've put it through about 3 full day games since. Its been rock solid reliable. It has a good weight and the build quality has been excellent.
Out of the box, it just works. Compared to my previous gun (Star/ARES) this thing is super reliable. If anything was to break however, I love the split gearbox system. I've always been meaning to add a second gearbox to it, but I haven't needed to because the FPS is perfect stock.
I would still consider a 2nd one later on if really need to get under 350 FPS with .2G BB's, I haven't yet had a field that required it.
I highly recommend this gun if your budget is a little bit better.
+ 350 FPS with .25g / 370-80 with .2g BB's
+ Tight Hand Guard / delta ring connection makes it feel sturdy
+ Fits 9.6v mini NiMH
- Tight Hand Guard / delta ring connection makes it hard to put battery in
- I doubt it can handle a 11.1 3C LiPo due to the tight spacing from the handguards.
- No RIS but the handguards do feel nice and I've grown out of having tons of accessories. They just add weight.