Fusion Thermal Rusan Adapter 42.5mm Features The Fusion Thermal Rusan Adapter 42.5mm is precisely machined to deliver concentric alignment between the rifle scope's objective and the attached clip-on device helping maintain optical performance and minimize parallax. 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 42.5mm objective interface is required. Simple installation and secure retention make the 42.5mm Rusan Adapter a reliable solution for Fusion Thermal clip-on configurations that require an objective interface for scopes with a 42.5mm bell. Fusion Thermal Rusan Adapter 42.5mm Specifications a fa fa Manufacturer: Fusion Thermal a fa fa Model: Rusan Adapter a fa fa Outside Diameter Fit: 42.5mm a fa fa Compatible Fit: Scope objective lens bells with 42.5mm outside diameter a fa fa Intended Use: Clip-on optic interface Rusan Adapter Fitment Chart