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APS One-Piece Metal Hopup Unit for M4 M16 Series Airsoft AEG Rifles

ID: 41946 (HU-AER024)
APS / Hakkotsu41946
2.2 stars, based on 12 reviews
APS One-Piece Metal Hopup Unit for M4 M16 Series Airsoft AEG Rifles
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Newest Generation design


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.
*Newest Generation design

APS Reinforced One-Piece Metal Hopup Unit for M4 M16 Series Airsoft AEG Rifles
The APS Metal one piece hopup systme comes complete with all the little parts assembled and is compatible with all major M4 M16 series platform full metal AEG.

Compatibility: For APS, Tokyo Marui, Matrix, Classic Army, JG, Dboy, SRC, CYMA, VFC, G&P and other compatible M4 / M16 Series Airsoft AEG Gearboxes
Material: Metal Alloy

Manufacturer: APS

California residents click here for Proposition 65 warning

12 Customer Reviews

(Write a review)

by Chad P. on 04/04/2017
"Bought a URX Raptor a couple years ago and it has this hop up in it. Still using the stock hop up unit after more than $700 of upgrades to the gun. This hop up unit is a incredible hop up for a stock unit. To this day I still look for better parts to put in my Raptor. The hop up unit and 6.03mm Stainless steel stock inner barrel are the 2 things I have not changed from stock parts because their performance is flawless. I have seen the adjustment wheel come loose on one of these units before, all I had to do was put a washer under the screw that holds the wheel on. This was on a friends APS Kompetitor m4 and it still functions perfectly.

- One Piece (Has PERFECT air seal)
- All Metal (Durable will not warp bend or crack if you drop your gun)
- Maintenance friendly (Simple to: take a part and clean/ install custom nubs and flat hop, R-hop, etc...)

- Can't give it 6 stars

Please don't read the negative reviews and confuse product quality with human error.
by Caleb K. on 10/15/2016
"Worked OK when I first got it (stock in my APS AEG) but after about 2 months, it began to loosen up. What I mean by that was, not matter how hard you tightened the screw on the first gear, it would still free spin every time I shot. I use a polarstar engine, so there is little to no vibration at all, yet is still free spins. I do not suggest purchasing this product. Save your money and buy a Prowin.
by Ethan D. on 03/22/2016
"I bought this as an upgrade to my stock hopup hoping to get a more durable and long range hopup. This is probably the worst hopup anyone could buy.


Doesnt even come into contact with magazine
Broken adjustment wheel put of the box
Less range than with stock hop-up
Didnt come with lock
No nub
No brass ring

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