Polymer construction, provides high pressure resistance (up to 200 kg) Impeccable feeding and performance Capacity: 30 balls Compatible with Airsoft single shot, multi shot and 3 round burst shotguns Compatibility: Tokyo Marui, UTG, ASG, Cybergun, Umarex, TSD, Matrix, JG, Double Eagle, Bravo, UKArms and other compatible standard load shotguns. (Not for APS Gas Shotgun series)