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ProWin CNC Aluminum Hopup Chamber for P90 / E90 Series Airsoft AEG SMG's

ID: 56321 (HU-PW-P90)
3.0 stars, based on 2 reviews
ProWin CNC Aluminum Hopup Chamber for P90 / E90 Series Airsoft AEG SMG's
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This item is currently Sold Out

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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.


  • Precision CNC machined aluminum construction
  • Resilient anodized finish
  • Improved durability
  • Enhanced air seal and performance
Material: CNC Machined Aluminum
Compatibility: For Tokyo Marui, Classic Army, Echo1, and other compatible P90 / E90 series Airsoft AEGs

Manufacture: ProWin

2 Customer Reviews

(Write a review)

by Tanner S. on 09/23/2015
"great little Hop-up unit, bought it to replace my factory plastic one.

I was however a little bummed to find out no other pieces where included other than the hop up arm pin. i had to use the old adjustment wheel and arm.

it is an excellent built up grade part, finish is excellent. after putting it together and installing it i notice a slight bump in efficiency and FPS, along with my promy 6.03 barrel, lonex 70d it shoots lasers.

I only wish it included the black hardware.

over all i suggest getting it.
by Garrett M. on 01/16/2021
"Got one of these in October of '20 to upgrade the performance on my P90 (Cybergun version). I've had nothing but issues with the gun since. Very inconsistent velocities, from 180-360, won't go above 280 now, plus occasional feeding skips. Might just be a bad unit but after I dropped the stock hop up back in it started to fire a lot more consistently.

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