that pic doesnt have the maxflo, its just a asa
but it says....
A 45 grip frame with an integrated rail. The only Shocker on the market with this feature. Your preset air tank can screw straight into the back of your Octane without the need for a rail or drop forward. You can also attach a 2004 Inline MaxFlo directly under your grip, making the Octane the smallest Shocker with air system on the planet.