Panasonic CR2025 Battery (ULTRAVIEW)

Optum Ring system (O.R.S.) for the 35mm and 40mm Optum scope
This must be used in conjunction with an Optum scope
Makes it possible for shooters to change pin positions, fiber color, or fiber size by swapping between multiple rings in seconds
Features exterior fiber wrap that captures ambient light for a brighter pin
Adjustable fiber cover allows precise control over fiber brightness
Two 8-32 holes for installing a light in seconds
Eight pin positions
Threaded on the target side for optional sunshades and lenses
Only 40mm Optum sunshades will thread into the O.R.S.
Removable pin in keyway slot for perfect alignment every time
Includes:
Optum ring body
Tubing and fiber cover - pre-installed
Pin and fiber (no fiber for no pin option)
Blue, red and green fiber included