14" Werks Barrel
68ci 4500psi Nitro tank
Works great; Easy to install.
I was using CO on my A-5 when I bought the expansion chamber. I was getting a lot of snow out the barrel in warm or cold weather. It stopped that and increased my accuracy. When I changed to Nitro I left it on and it seems to help a little there as well. I'm very happy with my purchase and would recommend it as an upgrade for any marker.
Worth the money especially if you're having problems with snow out the end of your barrel. Buy it.