No. The base of the guns are different and it is impossible to change it into a quality CO2.
No. even though some spring guns have great range, co2 allows you to fire more then once before reloading.
Neither
Well no a Co2 cun justs uses compresed Co2 intead of a spring or a batery Co2 if fairly cheap and are easy to use
An air-soft gun that is powered by CO2 or green or red gas instead of a spring or a battery.
No
No company makes a spring action galil airsoft gun currently.
You can't without some experience in metalwork.
It depends on the make/model of the gun, and the power source (AEG, CO2, green gas, as spring ones require to be cocked after each shot.)
Keep it clean and get a stronger spring.
go for the m14, unless its cheap looking.
yes
No, it is a cheap spring gun and could not be used in an airsoft match