Fits: Huben k1
This Adapter is not compatible with the first Huben generation
Allows to connect any standard 1/2 x 20 UNF Moderator to your rifle shroud
Comes with self-tightening tools (no other tools are required)
Fits: 177, 22, 25, and 30 calibers

Specs:
Shroud side – thread’s size and pitch: M23 x 1
Outer diameter: 25 mm