Fusion Thermal Rusan Adapter 44mm Features The Fusion Thermal Rusan Adapter 44mm is precision-machined to deliver concentric alignment between the rifle scope's objective and the attached clip-on device helping maintain optical performance and minimize parallax error. Its streamlined profile supports proper eye relief and balance without adding unnecessary bulk. Built for durability and repeatable performance in the field this adapter is suitable for hunting tactical and professional applications where a 44mm objective interface is required. Simple installation and secure retention make the 44mm Rusan Adapter a reliable solution for Fusion Thermal clip-on configurations that require an objective interface for scopes with a 44mm bell. Fusion Thermal Rusan Adapter 44mm Specifications a fa fa Manufacturer: Fusion Thermal a fa fa Model: Rusan Adapter a fa fa Outside Diameter Fit: 44mm a fa fa Compatible Fit: Scope objective lens bells with 44mm outside diameter a fa fa Intended Use: Clip-on optic interface Rusan Adapter Fitment Chart