-Solidly built, almost rubberized feeling.
-Plenty of space.
-Easy to install
-Metal battery door and buttplate.
-Solid sling mount point in the rear and QD mounts in the front.
Honestly not any... rather impressed with this.
I have a MOSFET unit, large to small tamiya converter, and still plenty of room to house a 9.6v nunchuck. Very happy with this purchase. I'll have to see about the durability once it gets smacked around a bit over the next few years.
Rating: [5 of 5 Stars!]