Air Venturi Avenger adapter
thingiverse
this adapter centers the barrel and allows for 1/2 x 20 moderator (see mine) to be attached for a very quiet air rifle.
Download Model from thingiverse
With this file you will be able to print Air Venturi Avenger adapter with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on Air Venturi Avenger adapter.