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AEG UNIVERSAL LOWER (Ver3) ESTILO ICS
AEG UNIVERSAL LOWER (Ver3) ESTILO ICS

Lower Universal Gearbox V3

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Universal lower for V2 gearbox, designed for AEG replicas converted to HPA or for ICS configurations with pneumatic engines.

This lower follows the ICS type (split two-piece system) and is optimized for 3D printing in PLA+, offering an affordable and functional alternative to the original metal lower.

Key features

  • Universal compatibility: works with M4 AEG replicas using V2 gearboxes and ICS split systems
  • Direct threading: screws go directly into the printed body, increasing rigidity without the need for metal inserts
  • Magnetic connector support: internal slot for a 3-pin connector with 2.54 mm tabs (compatible with Gate Titan 2 and similar)
  • OEM select plate: uses the original selector plate from any V2 gearbox

Tested compatibility

This lower has been successfully tested on replicas from the following brands:

  • DBoys
  • AMOEBA
  • ICS
  • G&G

Note: You may need to slightly enlarge the trigger hole and safety lever hole, as each manufacturer uses different thicknesses for these parts.

Design revisions

  • Rev. 5: Added housing for select plate
  • Rev. 4: New internal wiring channel
  • Rev. 3: Adjusted magazine well opening
  • Rev. 2: Enlarged grip hole
  • Rev. 1: Added version without magnetic connector for standard Gate PCB use

Gate Titan 2 FCU compatibility

Only compatible with the version without magnetic pin support.
If your Gate Titan 2 uses a 3-pin magnetic connector with 2.54 mm tabs, this lower supports it — simply slide the connector in from the inside.

Required hardware (not included)

  • 6× short M3 screws: for general lower assembly
  • 3× long M3 screws: one at the rear and two for the grip
  • 4–8× M3 nuts: optional, to reinforce grip mounting

Screws thread directly into the printed body, eliminating the need for metal inserts while still providing sufficient rigidity.

ICS-compatible design

This lower follows the ICS standard:

  • Central slot for the split system
  • Clearance for the upper gearbox tabs
  • Compatible with this project’s alignment kit designs

3D printing parameters

  • Estimated print time: ~3–4 h (depending on printer)
  • Recommended material: PLA+
  • Layer height: 0.15 mm – 0.20 mm
  • Recommended infill: 75–100% (for maximum strength)
  • Supports: yes, in the grip area and magazine well

Manuals

Installation and setup manuals are available in the Manuals section on the website or on the project’s Discord server.

🎁 You can find the previous version (Ver. 4.2) here:
https://lab.sychev.xyz/products/lower-universal-gearbox-v42-a543b4

🎁 You can find the previous version (Ver. 4.3) here:
https://lab.sychev.xyz/products/lower-universal-gearbox-v43-41e105

🎁 You can find the previous version (Ver. 4.4) here:
https://lab.sychev.xyz/products/universal-lovewer-v44-mtw-273981