HADRON DESIGNS EU17 EU18 GBB TDC Outer Barrel Assembly TM/WE

Code: G-TDC
  • 3D Printed
  • 0.4g+ Required
  • Lightweight & Tough

A 3D Printed Outer Barrel Assembly for TM & WE branded EU17/EU18 model GBB Pistols, which offers a TDC Grub Screw HOP style adjustment to increase performance when paired with a quality bucking and heavyweight BBs.

Full description


This awesome 3D Printed Outer Barrel is designed for WE and TM branded EU-Series 17/18 Gas Blowback Pistols, and offers the same pocket rocket precision as the original MK23 kit. It is very easy to install, and simply needs to replace your existing Outer Barrel Assembly as well as remove the wheel from your existing HOP Unit. The manufacturer recommends pairing this product with a quality bucking such as the Flamingo or ML Autobot 50 series, as well as heavyweight BBs (0.4g+) otherwise you will achieve too much lift from the unit. It is noted that ML Crazy Jet barrels are compatible with the unit and work very well. Insert a H-Plate or Fang if required and enjoy sniper-like precision from your sidearm. Just remember to tighten up the bottom securing grub screw for reassembly (do not over tighten) and also ensure the top grub screw is flush and allows the slide to move without catching before use. It was noted during testing that the use of this kit and 0.4g BBs brought our G-Series right up to the joule limit for the weight of BB.


  • 3D Printed
  • Tough Construction
  • Lightweight
  • Ported/Vented Design
  • TDC HOP Mod
  • Heavyweight BBs Required
  • For WE/TM Branded G-Series
  • Easy Installation
  • Improve Precision
  • Massive Performance Gains

Package Includes

  • HADRON DESIGNS EU17 EU18 GBB TDC Outer Barrel Assembly TM/WE



Internal Part Type
Hop-Up & Parts

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 0.01kg
Product Length
Approx. 11.3cm


Colour Wheel Greyscale
Item Colour
Construction Icon
3D Printed Polymer
Internal Part Construction

Part Specific

Part for Power Source Type
Weapon Platform

Size guide

Parts Fitting

Upgrades and Downgrades should only be undertaken by experienced players, or Airsoft Technicians. Please note, changing any internal parts of a weapon voids its warranty unless done in-house by our staff. 

Please ensure that when fitting parts the part purchased is the correct part, as once a part has been fitted we cannot accept return.

We do know that players love to tinker, so we're here to give you help should you require it, and if needed you can get in touch with our workshop for more help!

Unique Parts

Please note that some parts may be unique to a specific brand of weapon. For example: Parts for an ASG M4A1 may not fit an ICS M4A1.

Parts from the same brand typically have a high chance of fitting, though be warned, some replicas use unique parts, so please ensure the part will fit before you attempt to fit it.

If you require help with fitting any parts feel free to get in touch with us via our Contact Us Page.

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