FX What is the proper method to remove bottle?

The bottle has a valve so you can safely unscrew it from the rifle. You will see the the main gauge goes to zero when that happens. If you need to empty the bottle you will need special tools available from Saber Tactical see link below. . The plenum on the other hand should still have air as it will show on the reg gauge. Fire a few rounds and the plenum will discharge the remaining air.

 
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