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  • Regular price $74.95
  • Will be in stock after


Finally, an external adjuster for the Action Army VSR10 chamber! It replaces the original hop arm with a nub system and click / smooth adjuster mechanism. You can make insanely precise adjustments this way and tune your shooting trajectory to perfection. 

Lowest profile on the market

Don't have clearance for TDC you say? Our TDC requires a clearance of just 5.0mm, which means it will work even with the biggest scopes and low scope rings.

It's not going anywhere

The screw is installed in 1/2 aluminum, 1/2 undersized Nylon thread which provides the ultimate combination of durability and resistance to the screw.  O-rings and external housing provide additional resistance. Trust me - it's not moving by itself.

No epoxy gluing

We really didn't like the idea of having to permanently glue something on the outside of the barrel. That's why our TDC is an all-internal upgrade that installs inside the hop-up chamber and requires no gluing. For the PRO version, the external housing comes with pre-installed strong double sided 3M tape for easy installation and easy removal without damaging the gun. We even include a spare set of tape in the kit.

Vertical pressure nub system

Our TDC replaces traditional hop-up arms with CNC machined aluminum nubs that provide perfectly vertical pressure to the bucking. Each TDC comes with 3x different nubs so you can choose whichever you like the best or use the red universal nub with any off-the-shelf nub like ML Omega / Panthera / soft nub / etc. 

Fool-proof installation

We made sure that our TDC 2.0 can be installed with any level of skill. We made sure that our drill jigs are usable with handheld drills, the process is dead simple and there's no way you can mess it up. The drill bit also comes with a little shelf to make the pin removal easier on the Action Army chamber.


PRO version provides the absolute perfection in terms of feedback and looks. The external aluminum housing provides a satisfying click to the thumbscrew that allows to precisely adjust the TDC and protects the screw from accidental bumps. It also acts as an extra safety layer to make sure the screw doesn't turn by itself.

BASIC version provides the same internals and performance of the TDC 2.0 PRO but at a more affordable price point, just without the external aluminum housing (clicking mechanism). In case you ever change your mind, you can purchase the TDC 2.0 Pro Upgrade Kit at any time down the road for the full experience!


Action Army VSR10 chamber Yes
Tokyo Marui VSR10 chamber No
Maple Leaf VSR10 chamber
Novritsch SSG10 chamber No


👉 Tokyo Marui VSR10 version is still in development


Required for installation:

  • drill or drill-press
  • beer (optional)

Included in BASIC & PRO:

  • 1x custom M3 thumbscrew with o-rings
  • 1x M3 grub-screw
  • 1x TDC insert
  • 1x insert spacer
  • 1x custom M3 aluminum nut
  • 3x different aluminum nubs (black, gray and silver)
  • 1x universal nub (red)
  • 1x set of drill jigs
  • 3.5mm drill bit

Included only in PRO:

  • 1x external housing
  • 1x plunger (pre-installed)
  • 1x spring (pre-installed)
  • 1x M3 set screw (pre-installed)
  • 1x spare set of double sided tape