Spyder Agressor, with 4 stage Sub zero Expansion Chamber, And ESP frame, and a JT barrel. 20 ounce Co2 and a X board Rev hopper. A java 4 in 1 pack, And a remote.
This helps your Co2 expand fast and it helps a lot here in the cold winter of 20 degree temperatures.
It gives you something to hold on to while you are in battle that you need for stability for.
And its easy to install just takes a about 20 or more.
Nothing bad about mine yet. Its worked well and ive played 3 times sence i got it.
This is a great upgrade and i recommend it to any one who is looking for a good expansion chamber,