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KWA KM4 Hop-Up Chamber Unit

by KWA
SKU 199-1002-0005S

The KM4 AEG hop-up assembly fits all KM4 Series rifles, including the new SR Series. It comes with everything pictured. Please note that this does not come with the hop-up nub, part E-13, or the bucking, part E-14.

Part 199-1002-0005S


  • High quality reinforced polymer construction
  • Factory direct OEM replacement part