H&K Umarex 400 Round Airsoft High Capacity Magazine for UMP .45

Features: Made from high strength nylon polymer Mag window with dummy rounds for added realism High BB capacity winding magazine Compatibility: For Umarex H&K and other compatible UMP Series Airsoft AEG SMG's (Not compatible with G&G / Double Eagle UMG series) Capacity: 420rds Manufacturer: Apple Airsoft / STAR / ARES