Things I liked: After using the hand pump, I was glad to get this unit. It connected up ok; it did required some tightening but sealed well enough to deliver 200 bar for my 909s. Glad I got it!
Things I would have changed: I would like a guage that shows psi along with bar. I had to do some calculating to make sure I deliverd the proper pressure.
What others should know: I think the best way to charge my 909s was to stand the rifle up next to the tank leaning the rifle back to match the height of the tank.