British made, quality item to allow you to fit your favourite 1/2 UNF sound moderator
to your Airgun with a 16mm barrel(also available 15.75mm,15.5mm,15mm,11.05mm and 10mm).
NOW WITH TWO GRUB SCREWS POSITIONED OPPOSITE EACH OTHER.
This not only gives a better grip but can also be used to improve alignment of your silencer to your barrel.
Simply slide over barrel and secure with two grub screws for better grip and alignment. These are included together with Allen key.
Price US$35 including Free Worldwide shipping.