Anybody have these/similar for sale in the USA?
Airguntechnology VIXEN 1/2 X 20 UNF Adaptor | Eaglevisioncam
Fits Fallowing Rifles: VIXEN (ALL THE MODELS ) Please follow this guide, to ensure correct installation. 1. unscrew and Extract the aluminium baffle. 2. Make a 4x 3mm hole with 3mm drill bit in your baffle same locations as original holes. 3. Carefully line up the 1/2 x 20 UNF adaptor hole... 
eaglevisioncam.com
Airguntechnology VIXEN 1/2 X 20 UNF Adaptor | Eaglevisioncam
Fits Fallowing Rifles: VIXEN (ALL THE MODELS ) Please follow this guide, to ensure correct installation. 1. unscrew and Extract the aluminium baffle. 2. Make a 4x 3mm hole with 3mm drill bit in your baffle same locations as original holes. 3. Carefully line up the 1/2 x 20 UNF adaptor hole...
eaglevisioncam.com