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

ID: 35836 (CH-ASG-16603)
3.7 stars, based on 11 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

California residents click here for Proposition 65 warning

11 Customer Reviews

(Write a review)

by Levi C. on 05/31/2018
"Just ordered this to drop in my G&G CM16 Mod 0. Overall seems to have a good build quality, tight fit in the cylinder for a good air seal. The rubber seems very hard so I was concerned about it being to loud and not absorbing enough of the shock. I have only fired a few dozen shots so far but seems fine. I paired it with a Lonex ball bearing mount piston head. 3 stars because I had to modify it to fit my V3 gear box. The holes do not line up with the holes on my gear box, I had to grind some rubber off the front and in the holes to get it to fit. Not too hard with my dreamer but definitely was not right.
by Jamespaul L. on 03/01/2017
"This is a really nice piece of equipment. It's just as it looks so you don't need to worry about not getting a double o-ring on the head. Now the reason for a two star rating. Only get this if your exact model/brand that it specifies. None of the "similar brands" will work so do not fall prey to that. I did and it is quite annoying.
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.

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