To be fixed to the middle tube or objective of the scope. These clamping rings are equipped with our UNIVERSAL interface, which has already proven itself in the military-tactical field. It is used to mount Picatinny rails in various lengths and special mounting plates, which enable the secure and space-saving installation of various accessories. ERATAC Aluminum Scope Ring w/Universal Interface (fits 5-25x56 PMII Objective End) 03680-5762