The 68 Ci 3000 Psi crossfire nitro tank is great. It keeps my minimags velocity as consistent as it can be as it is also light weight. Nitro tanks are good for the heat and cold as Co2s pressure will change. The fiber wrap is a good choice to keep the weight at a minimum. Nitro tanks are always a little bigger but it is a good sacrifice because it is much cleaner then Co2 and will keep liquid out of your gun. If you put a dropforward on it it will keep you gun balanced and you will never even notice the size of the tank.
Crossfires prices on their tank are great for the quility of them and opposed to those costing up to $400. I recommend Crossfire nitro tanks for those who demand quality for a good price.