ID: 40058 (HU-PW-M4)
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ProWin CNC Hopup Chamber for M4/M16 Series Airsoft AEG RiflesHigh performance M4 hopup unit.CNC out of aircraft grade aluminum.Superb air seal.Superb durability.Anodized surface treatment.
Compatibility: For Matrix, Tokyo Marui and other compatible M4 / M16 Series Airsoft AEG Rifles
Material: CNC Aluminum
(Write a review)
"This is a good hop up and I would recommend this to anyone with a stock hop up. The wheel dial is really a drastic improvement to the hop up design. All companies should make wheel hop ups. With that out of the way this is solid unit for the price easy to assemble and easy to use holds its zero. I bought a used manufactured with in the last year. Yes it does make a difference on when you purchased this hop up, about 18-24 months ago they changed the process from CNC to cast just to give you guys a heads up. The only CNC machined hop up unit for the m4/m16 is the retro arms hop up.
huge improvement over a stock hop up
easy to assemble
Not CNC machined like its advertised(if manufactured with in last 18 months)
"I really expected perfection from this unit. However inside the chamber it had a slight defect which scratches bb's and my nozzle. I spend about 2 hours carefully smoothing the casting defect away. I wouldnt expect to see that in other units, just a rare defect. This hop up unit doesn't have a notch at the top of the feed tube to prevent the bb's from slipping into the barrel from the mag pressure. Which hasn't been an issue for me but could be for others with different setups. Also the unit has material in the way where the nub touches the bucking, so if your planning on using any nubs that are longer then a standard tube nub it will snag up on it and create uneven pressure. The arm is very evenly casted and will put even pressure on the nub. The dial is very good and not super sensitive like a standard hop up. This hop up unit works better with thicker buckings, thin ones like g&g g&p lonex and such will be too thin to seal without Teflon tape.
This hop however isn't poop and is still very good and feeds very well. I'm just nit picky when it comes to spending this much money on a hop up unit, I expected better.
"I have this on my custom built P☆ HK416 and after a few tweaks. This this in deadly accurate. I play CQB indoors, I definitely think it's worth the investment. I also have other mods as well.
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