Umarex HK UMP 400rd HI-CAP Magazine Marker Upgrades Lower body made from CNC

Lower body made from CNC Aluminum with steel core

Alpha Black boasts an in-line bolt system

5") - 915mm (36") (Adjustable)Weight: 2

Full Metal Polish Finish

Realistic single action revolver action

Umarex HK UMP 400rd HI-CAP Magazine Marker Upgrades Lower body made from CNCIf 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.