Code: harmv2
  • Requires Hadron TDC
  • Replaces MK.23 HOP arm
  • Improves HOP performance for heavy BBs

A replacement HOP arm for your MK23 pistol, either TM or ASG. This part will enhance your pistols range and enable it to apply HOP to BBs of 0.4g and higher!

Full description


The H-arm V2 is another attempt by the well-lauded Hadron Airsoft Designs, innovators, and industry leaders in MK23 parts. The H-arm V2 features an improved nub pattern using a more defined H-Plate style profile and shows improved patch deformation when used with the latest buckings for the MK23. As a bonus, this piece is CNC machined from aluminium and finished in a lovely gold/orange colour, improving its strength, allowing it to put more force on the HOP rubber and looking pretty to boot.

This part requires Hadrons TDC plate for the MK23, although it is compatible with all iterations of the TDC plate.


  • Allows more HOP to be applied
  • Compatible with Hadron TDC plate
  • CNC Aluminium construction
  • Improve your range!
  • Makes the MK23 able to lift 0.4g BBs!

Package Includes

  • Hadron Airsoft Designs MK23 H-arm V2



Internal Part Type
Hop-Up & Parts, Hop-Up Arm,


Colour Wheel Greyscale
Item Colour
Construction Icon
Internal Part Construction

Part Specific

Part for Power Source Type
Weapon Platform
  • Pistol
  • MK23
Package Includes

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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