A quick tutorial by Combat Sport Supply for beginners when using CO2 magazines for their airsoft guns... "There are some secrets to properly filling your Airsoft CO2 Magazine. Learn those with this Airsoft Guide to fill it properly everytime. How Far You Crank the Allen Key and other factors play into how you fill the CO2 Airsoft Magazine."
Rock Bottom Airsoft got another helpful video for beginners, helping them understand CO2 magazines for airsoft pistols... "In this video we take a look at CO2 mags, popular for Airsoft sidearms.
We will look at some tips and maintenence solutions to keep your CO2 magazines in top condition and avoid some of the problems that can occur when using CO2 for your airsoft replicas.
Operator7 has a new review posted at Airsoft Community Europe... "To me it’s great to be able to have both Green Gas and CO2 mags working on the same gun. The way I using them right now is I’ll go through the CO2 mag first since it’s the one with more fun and power, and once this is depleted I’ll just load up the Green Gas one which will lubricate the gun and still give me a few more shots whenever I need it! To be able to have a second mag is great and most WE guns come out of the box with two mags.