Use mine every now and again, when I want to top up direct to gun. Works fine. I don't use it on an external ( divers ) bottle that would kill it...but a quick top up works well. Its an occasional top up tool for me - divers bottle first - then Nomad 2 if I am low on the divers bottle and don't want to run the larger compressor. High Power rifles - hhhmmmm, if you use a lot of air I would go with a good carbon bottle and large home compressor......occasional top ups works for me.
G