Things I liked: The looks and feel are great, lots of room for add-ons on the sides and top (laser, scope, light ,bi-pod, etc). It's built tough with perfectly machined metal parts.
Things I would have changed: The battery compartment is razor sharp, its like a double paper cutter, watch your battery wires, I'm going remove and sand down that area ASAP.
What others should know: READ THE MANUAL 1ST, READ THE MANUAL TWICE, ALL OF IT. I freaked out after half a clip, I help down full auto and thought it jammed, motor just screamed like it stripped the gears, I removed the cover on the bottom of the handle and pulled the motor out, looked fine the reinstalled, worked fine so far, still scared to hold full auto, but I just got it today, less than 500. THEN I READ THE MANUAL and adjusted the motor gear adjustment srew a quarter turn just to be sure.