Things I liked:As a spare Mag that fits and works every time. Just make sure you put some silcone oil in on your first Gas fill. Things I would have changed:Nothing it a factory Mag not a knot-off. A Factor OEM parts always work the first time. What others should know: Just make sure you put some silcone oil in on your first Gas fill. So the valves will keep the O-Rings Fresh on the two valves (Fill & Discharge).