CYMA One Piece Metal Hopup Chamber Set for M4 M16 Series AEG

Availability: Out of Stock
Brand: Gear Stock

Designed to replace a stock plastic or damaged hop up unit in your M4 variant AEG.


  • Full Metal Housing for maximum durability
  • Special cut in the front makes the tappet get back more when operation.
  • Hopup rubber packing included
  • Fits all M4 hopup rubbers
  • Fits all metal bodies. (Excludes KWA metal body)

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