Heavy duty metal construction for a durable and reliable sniper rifle magazine Compatible with MP008 Airsoft AEG Electric Sniper Rifle 280 Round High Capacity magazine functioned via winding system Polymer winding key included in order to access the winding systemSpecifications: Brand AGMMaterial MetalMagazine Capacity 280 Rounds (High Capacity)Weight 6.90 ozColor BlackCompatibility MP008 Airsoft AEG Electric Sniper Rifle 1X Magazine