I own the KJW 1911 tactical. With that said the CO2 mags perform flawlessly. They are a better bang for the buck then the Green Gas mags. This is because 1 c02 cartridge is good for 3 mags worth of bbs. Whereas you'd be lucky to get 1 mag worth of gas on the green gas mags. The only reason the mags leak is due to user error. This is because the user doesn't completely tighten the screw under the mag creating a complete seal. When done correctly you will get up to 3 mags give or take of 290 to 310ish performance with a nice crisp blowback. Also you can use these mags in the winter w/out worrying about cooldown.
Can use in the winter
no cool down effect
Ignorant 13 years dont know how to read directions on installing c02 in the mags
takes longer to switch out co2 bulbs
Rating: [5 of 5 Stars!]