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ProWin CNC Hopup Chamber for M4/M16 Series Airsoft AEG Rifles

ID: 40058 (HU-PW-M4)
4.1 stars, based on 32 reviews
ProWin CNC Hopup Chamber for M4/M16 Series Airsoft AEG Rifles
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This item is currently Out of Stock Usually restocked within 1-3 weeks.
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MAP ProtectedExempt From Coupons
The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.
Compatibility: For Matrix, Tokyo Marui and other compatible M4 / M16 Series Airsoft AEG Rifles
Material: CNC Aluminum

Manufacturer: ProWin

  • High performance M4 hopup unit.
  • CNC out of aircraft grade aluminum.
  • Superb air seal.
  • Superb durability.
  • Anodized surface treatment.
  • California residents click here for Proposition 65 warning

    32 Customer Reviews

    (Write a review)

    by Michael S. on 05/07/2018
    "Perhaps a bit overpriced but it's sturdy, looks nice and is a very consistent and easily tuned unit.
    by Nash G. on 05/04/2018
    "As a Tech for my team using KWA and Ares rifles, I've heard a lot of back and fourth from team members about which is better. Personally, I've found it depends on the build. For quick adjustments, a pro-win is the obvious answer. It is easy to adjust, but tends to move if you don't use an oversized bucking such as a Maple leaf or a G&G green. The retro arms, In my personal build (Ares M110), is harder to adjust, but the benefit for that is that it has never lost pressure on the nub in an engagement at 200+ feet, something important when you are counter snipping. I would recommend Flat hopping on both builds if you want to get the best performance. (Unless you can R-hop) Either is a good choice. But After my previous issues with the pro-win (late 2017), I will be sticking with retro-arms until they increase QC.

    --Retro Arms-- (Good for long range builds)
    Stiff and doesnt move once you set it.
    2 ways to tension the barrel,
    large window for the nub
    Doesn't Fit stock KWAs (Vers 2.5+), Some G&P, or most Ares without cutting

    --Pro-Win-- (Good for the everyday user, and with a little work, long range builds)
    Fits most TM style guns
    Easy to adjust for quick games
    Large window for nub (slightly smaller than retro arms)
    Doesnt fit Stock KWA (Vers 2.5+) or Ares (M110, cant speak for others)

    Red Devil Works Tech
    by Michal F. on 04/20/2018
    "I don't like mine very much. I prefer Krytac's stock hopup chamber in every way. The hopup arm pin is very easy to loose in particular.

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    This item is currently Out of Stock. Most out of stock items are restocked within 1-3 weeks. Some items may take longer. Please add this item to your wishlist to keep posted on its availability.