PSK89

I have 6 co2 magazines and four green gas (propane) magazines and i can tell the difference just from the change in force from the recoil. IMO the CO2 has a much harder recoil

I own a SCAR which is running off of CO2 which works fine on semi auto at temps below freezing however at that low temp cool down affected the gun slightly. Few things to remember with playing CQB and using these GBBR: 1. Unless the site is restricted to semi-auto only you will find yourself to a disadvantage 2. 30 round magazines vs high cap magazines playing style needs to be altered limited amount of suppressing fire per mag 3. Weight of the magazines these arent the heaviest GBB magazines but they arent lightweight 4. The number of magazines you may require and the attached

I had my SCAR out today for its first skirmish and I have to say the other players and myself were impressed with how it coped with the weather. We were playing in Dundee (the hill) with a fair cover of snow and with the temp possibly being as low as -5 celcius. Firing using co2 with a stock gun other than a RA-Tech NPAS. One or two minor problems with the mags nothing that wasnt expected just trying to do quick changes of co2 and a little bit of leaking while setting up (two out of six mags) but this resolved itself having shot the the gas out. Can't really comment on the accuracy