That's right, the KJ 1911's are capable of using CO2 as well, so here we available for your pleasure, is the 26rds KJ 1911 CO2 magazine! Designed for use with CO2 only! Fits both KJ 1911 and INOKATSU 1911 pistols, and the RWA Nighthawk Custom GRP Recon Steel Version.
While this thick bumper version is a bit unsightly, it does have the benefit of possessing a larger regulator which offers much better gas management. That means this will allow you to hit harder with less drop in power due to cooldown during rapid fire.
If looks and aesthetics are important to you, opt for the KJ 1911 CO2 Magazine - Low Profile Bumper version which looks a lot better but sacrifices a little performance and stability for its good looks.