So I recently brought a WE M9 which came with a green gas mag, being fairly new to GBB pistols and airsoft in general I was wondering if I'm able to use a co2 mag (with the 12g cartridge) in this gun or if it will do more damage than good?
My brother just bought the same. I quite like it. If there is a CO2 mag then it may take it over site limits as it already fires at 310fps. CO2 usually shoots hotter than green gas.
