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ASG Lonex AEG Gearbox CNC Aluminum Cylinder Head - Ver. 2 (M4 / M16 / SCAR / MP5)

ID: 35836 (CH-ASG-16603)
4.0 stars, based on 9 reviews
ASG Lonex AEG Gearbox CNC Aluminum Cylinder Head - Ver. 2 (M4 / M16 / SCAR / MP5)
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ASG Lonex Ultimate Upgrade CNC Aluminum Cylinder Head - Version 2 (M4 / M16 / SCAR / MP5)
The Ultimate's Cylinder head is designed to provide the best possibility air compression and durability. For best result, pair the Ultimate Cylinder head with the Ultimate Cylinder!
The Ultimate Cylinder heads are CNC manufactured with aircraft grade machine aluminum for maximum durability and precision. Each Ultimate Cylinder head is also anodized for smooth surface finish, equipped with double rubber o-ring, "Trumpet design" and powerful rubber bumper to absorb the shock from the piston head while providing silent operations.


  • CNC manufactured for maximum precision and durability.
  • Double rubber o-ring seals to minimize loss of compressions.
  • Special "Trumpet design" ensures optimal delivery of air to the barrel and bb.
  • Powerful built-in rubber bumper that absorbs the shock from he piston head.
  • Made from CNC milled aluminum
  • Rubber pad on back side
  • Anodized finish

Processing: CNC
Material: Aircraft Grade Aluminum
Manufacturer: ASG / Lonex
Compatibility: Version 2 (M4, M16, MP5, SCAR, and other Version 2 Airsoft AEG's)
For Tokyo Marui, G&P, Matrix and other compatible Ver.2 Airsoft AEG Gearboxes

9 Customer Reviews

(Write a review)

by kyle s. on 12/17/2016

Would not work in g&g m4s
Would not work in any ares style gearboxes (elite force m4s) Installation felt great but it was sliyghtly to long and will cause you gearbox to lockup. I installed these on stock guns as well and the gearbox shell flexs a hair and Puts the gears on a slight angle causing them to grind to a halt. Adds a great sound to your gun though. Sounds like a paintball gun really.
by nathan t. on 02/04/2015
"Ok so most people above say it doesn't come with the rubber part on the front. This is not true mine came with it. I paired mine with a high quality cylinder and tested my air seal. Also paired with a vfc air nozzle the air seal was spectacular. It feels a bit light and almost like plastic but thats cnc for you. 5/5 i would reccomend it.
by Bryce B. on 01/25/2015
"this is not a bad cylinder head at all. its actually really good when it comes to keeping an air seal. the dual o-ring really does its job. Other reviews have said that the rubber seal on the front of the cylinder head never came on theirs. Mine came with it and it does help to preserve the front of the gearbox. while installing other parts i did notice that the buffer pad on the back is very loosely glued on. It did fall off. so beware of that. Overall this product is not bad and i would recommend it to all, just re-glue the buffer pad and no doubt will you be shooting at least 35+ fps.

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