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HK UMP Gas Blow Back Magazine
HK UMP Gas Blow Back Magazine
Regular price
$64.99 USD
Regular price
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$64.99 USD
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One 30 round HK UMP GBB mag is cool. But five 30-round mags is a party! The downside to the HK UMP Gas Blowback SMG being so fun to shoot is that the rounds in your 30-round magazine go quick. Better grab a few extra mags to stay in the game until you're the last one standing! Licensed Trademark of Heckler & Koch GmbH
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