sir_snipe_alot

The difference is the pressure. Co2 and compressed air have different temperatures so you have to adjust the screw. I had the same idea when I had an a5. Also, I had to keep changing it based on the temperature and such because that messes with co2 pressure.

Fets is right though, the only good thing about it is that it can get soaked in water, no batteries, and is cheaper.

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