My brother owns this gun, and I actually bought it from him awhile back (then resold it to him because he missed it).
Pros:
Pretty accurate, I used high grade .25 matrix.
Exact 1:1 scale replica of a G36, which I really liked.
Blowback feature adds to realism (kind of loud).
It's FULL METAL! Full metal gearboxes are always great.
Cons:
It's a G36. I'm more of a M4-M16 type guy, but that's just me.
The blowback feature drains batteries faster, but you can rig it (well, kind of break it) to where the blowback is disabled.
It's a good gun, well worth the money.