Things I liked: It will recharge the rifle.
Things I would have changed: Hose needs to be much longer so one can easily connect it and be able to see the meter on the rifle. it is very awkward to add air with such a short hose. Do you offer it with a longer hose?
What others should know: you have to support the gun with one hand throughout charging process and cannot monoiter the gauge as it fills without taking hand off the control knob.