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Lonex Aluminum One Piece Metal Hopup for M4 M16 Series Airsoft AEG Rifles

ID: 35846 (HU-GB-01-34)
4.3 stars, based on 14 reviews
Lonex Aluminum One Piece Metal Hopup for M4 M16 Series Airsoft AEG Rifles
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Hopup unit may require assembling


*Hopup unit may require assembling

The Lonex ULTIMATE Hop-up chamber unit is designed for the M4 / M16 family of rifles. This Hop-up chamber unit features top notch air seal and is designed to provide the best possible bb flight control.


  • Made from high quality aircraft grade aluminum alloy
  • Includes Everything for Complete Hopup Unit, Requires Assembly
  • O-Ring Seal on Gearbox Side
  • One-Piece Hopup unit.
  • Bucking and Nub sold separately

Application: For M4 / M16 / SR-16 / M4-RIS and other compatible Airsoft AEG models that uses M4 hopup units.
Material: Aluminum, One Piece
Type: One Piece.
Manufacturer: Lonex / ASG

Note: This product is designed to fit common M4 metal bodies. It will work with plastic body AEGs with some modification required. Professional installation is highly recommended. One piece hopup are generally intended for AEG with metal bodies.

14 Customer Reviews

(Write a review)

by Justin B. on 12/03/2015
"This is a seriously awesome hop up. The basic principle for accuracy in airsoft guns is, the less movement there is, the more accurate the gun will be. This is particularly important for the hop up because it has the most potential to move around. The Lonex hop up comes with a hop up arm and retainer ring for the barrel that are both intentionally over sized so that you can sand them down and get a custom fit done by hand. This allows the end user to make a much tighter fit than would be possible with mass manufacturing at this price and therefore minimize movement, resulting in an impressive increase in accuracy. The unit its self is a snug fit in my WE basic M4 AEG further improving accuracy. Now onto the real power of this hop up, range. Combined with a G&G green bucking, the range on my M4 doubled from about 100-120 ft. to 200-250 ft. compared to the stock hop up all else (BBs used, compression parts, barrel ect.) being constant. All in all this hop up and the G&G bucking are the best $30ish (depending on coupon codes) I have ever put into my gun.

-Pretty good quality (not exceptional but definitely satisfactory)
-Purpose built for improving accuracy and range as much as possible
-Room given for custom fitting parts
-Great price and high value

-Would have been nice if it were anodized instead of the nickle plating is seems to have

-Full assembly required and no instructions are given

Bottom line, I'm totally satisfied with this hop up and I wholeheartedly recommend it.
by Demetrius J. on 08/30/2015
"This is everything you'd expect out of a high quality hop-up chamber. The tolerances on the parts are perfect, no wobble between them. I can set my hop, and not worry about the wheel coming loose and messing up my setting. The aesthetic of the parts is also very nice with shiny aluminum and blue plastic parts!

-Well constructed
-no wobble in parts
-Aesthetically looks great
-Nice packaging

-Locking tab might need modifying
by Lucas W. on 08/13/2015
"just got the hop-up in today and am satisfied 100% not much else to say, used it with a brand new fully charged tenergy 9.6 1600 MaH NiMH battery, an a&k 70 round mid-cap mag and a Mad Bull 60 Degree Shark Hop-up Bucking with fishbone spacer that I also got in the package with my G&G G4-A3 (M4 Platform) and it all worked together very smoothly, fired all 70 rounds on both single and full auto flawlessly.

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