5KU Steel Thumb Safety Shadow 2 Upgrade Install
OptimusPrime
24 Feb 2026
Wyhaq installs a CNC-machined stainless steel aftermarket safety selector from 5KU on his ASG KJW Shadow 2 airsoft replica. He demonstrates the installation process for this specific component, which is designed to fit both the Shadow 2 and TS2 gas blowback models. The upgrade replaces the standard parts with a more durable material to ensure long-term use.
The modification features an extra-wide thumb rest intended for competition settings. This design provides a larger surface area for the shooter's grip, facilitating more consistent control during operation. Because the component is ambidextrous, it maintains full functionality for both right-handed and left-handed users.
In the video, Wyhaq provides an assessment of the part’s performance and fitment. He focuses his content on airsoft repairs and tutorials, offering a technical look at how this stainless steel upgrade integrates with the pistol’s existing internal mechanics.