Avenger Bottle Adapter
To purchase this item please send an email, and you will receive a payment invoice.
This bottle adapter is manufactured by Doux Technologies SA, a company in South Africa. Per their website, here is the product description:
"Bottle adapter for the Air Venturi Avenger / Nova Leviathan Adapter and blank of nut only. Adapter thread for Cylinder are STANDARD M18x1.5mm Thread. No Cylinder included. Gun stock need to be cut to fit."
Here is the company's YouTube video showing installation of the adapter: