Will fit to:
Does not work on first generation Hubens
This Adaptor allows you to connect any standard 1/2 x 20 UNF Moderator to your rifle shroud.
This item comes with self tightening tools (no other tools required).
Fits 177, 22, 25 and 30 caliber.
Shroud side Threads size & pitch: M23 X1
Outer diameter: 25mm