H&K UMP airsoft submachine gun magazine Fits H&K UMP AEG airsoft submachine guns 400 rds Carry this high-capacity replacement AEG magazine for your next airsoft skirmish. This magazine has a 400 rd capacity and fits H&K UMP airsoft submachine guns exclusively. Spend more time shooting and less time reloading, pick up this magazine today!
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I have several additional from Heckler & Koch and they are great:) Trust me!