Look What Umarex Has Done Now !!!

[mikeyb]

I've already had "my fill" (pun intended) of something similar...

www.amazon.com/Beeman-Sportsman-Model-QB79-22-Rifle/dp/B01FEE4AUM
+
www.amazon.com/Umarex-High-Grade-Cartridges-Pellet-Airsoft/dp/B001IEM1W2
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www.amazon.com/gp/product/B006W2K190

When CO2 is empty from my 90 gram cartridges I refill it with no more than 1200psi air. The 400-500 shots from CO2 goes down to maybe 30-40 shots on air. NOT great but I can use it for light plinking sessions.

...or I can use a real regulated air bottle...

www.amazon.com/gp/product/B07PJ7WKBY
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www.amazon.com/TUXING-Aluminum-Paintball-Pressure-Capacity/dp/B09YL8CZJF