If you're an HK UMP AEG user and all about a high round count, you better grab a few extra 400-round high capacity magazines to keep those rounds headed down range. Our 400-round, HK UMP AEG magazines are made of high-quality polymer, so they don't weigh much yet hold up well under rough conditions. No one likes running short on ammo, so be sure to pick up a few extras for your HK UMP AEG before you head out to the field. If you're not planning on bringing extra mags to the big game next weekend, you're not planning on winning. One Mag just won't make the grade. Get high marks on your gaming report card with a few extra mags for your HK UMP airsoft AEG. Most players say four to five mid-cap Mags are the optimal amount to provide you with enough ammo to last the whole game. Make sure that doesn't happen and pick up some extra Mags for your HK UMP airsoft rifle!

• Compatible with: H&K UMP Series AEG 6mm Airsoft Rifles
• Capacity: 400 rounds
• Easy to load and carry
• For use with 6mm Airsoft BBs