Same way as any other reg, through the fill nipple.How do you fill up bottles attached to angel AIR regs?
Nope, you can just fill the reg and bottle. But with AIR its probably easier not to take the reg/bottle off your marker.Do you have to take the entire gun to be filled?
Yes. You want to de-gass your bottle before you unscrew it from the reg. Otherwise bad things will happen.Surely when you screw off the bottle, you completely depressurise it?
Yep. AIR has an on/off build into it.To take off the AIR reg and bottle from the gun means to detach the micro line?(correct word?)