Ninja has been in development of their new Dura line of tanks during the last year, and they are finally here. The new tanks have a matte finish that is similar to the coating on aluminum baseball bats. Canadian players have been asking for a TC approved 45/4500 tank, and their request has been accommodated This is the lightest carbon fiber tank that Ninja offers, and has almost the same length as the 68/4500 tank. If you have a high performance gun, you need to be operating at a lower PSI than most. The Ninja PRO 4500 Super Low Pressure Regulator has an output of only 300 PSI. With the 360 Twist Technology, you are able to twist the tank to any position you want.