Constructed with high quality ABS polymer which gives a sturdy, realistic weight to the magazine Can hold up to 30 rounds of 6mm BBs and has a removable base plate for inserting CO2 cartridges Waffle style shell makes the magazine easier to grip and less likely to slip out of your grasp Compatible with the GHK AUG gas blowback bullpup airsoft rifle In the Box 1X Magazine Specifications: Brand GHK Build Polymer Magazine Capacity 30 Rounds Propellant CO2 Compatibility Compatible with GHK AUG CO2 GBB Airsoft Rifles Height 6.5 Weight 103 lbs Color Black California Proposition 65 Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov