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Optimize performance for replicas equipped with brushless motors
and a gas-in-mag design
It's rated at 430 feet per second and the mag holds 500 rounds of 6mm airsoft BBs
And the heavy-weight nylon thread ensures long-lasting durability
HK UMP - 120rd mid-cap MAG - Competition Series Airsoft / Airsoft Parts / AEG Parts Optimize performance for replicas equippedIf you're not planning on bringing extra mags to the big game next weekend, you're not planning on winning. One magazine just won't make the grade. Get high marks on your gaming report card with a few extra 120 round mid capacity magazines for your HK UMP airsoft AEG. Most players say four to five mid cap magazines are the optimal amount to provide you with enough ammo to last the whole game. There's not much more frustrating than having to head back
