The H&K UMP series of submachineguns are a family of polymer blowback firearms designed as a more cost effective alternative to the MP5. While both remain in production however, the MP5 still outsells the much younger UMP and it is quite easy to understand why: it isn’t as good.
But how will it perform on our run and gun course? Surely it will be better than the tried and true Thompson from last week.

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