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cleaning supplies

  1. HK ROOKIE CORNER
    I was looking on a website devoted to parts for HK guns to buy some cleaning brushes for my MP5K-PDW. What's the difference between the HK German 9mm Barrel Flute Cleaning Brush and the Universal Bore Cleaning Brush - 9mm,10mm40 S&W? Do I need both, or do they both do the same thing?
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