14 round capacity Self contained unit holds ammunition and the CO2 propellant canister Mimics weight of loaded AR15/M4A1 magazine. It is made from injection molded polymer and the shell is Bright blue color and makes it easy to identify. Compatibility: T4E TM-4 and TM-416 .43 cal training rifles Capacity: 15 rounds Gas Type: 12g CO2 cartridge T4E provides law enforcement and military Training Guns with authentic weight, feel and action to provide the most realistic training experience possible. Training with these authentic replicas provides better quality training and better reaction to real life scenarios. Our products carry supreme quality while remaining cost effective to all budgets. "Train More, Spend Less"