This base is designed to mount a reflex red dot sight on the Winchester 1871, 1886, 1892 and 1894 Lever Action Rifles without additional modification to the rifle.
The mounting plate uses the Trijicon RMR footprint. This can be used to mount red dots such as the Hi-Lux TD-3C red dot sights on to the top ejection Winchester Lever Action rifles.
The Winchester Lever Action Red Dot Base is designed to attach to the two rear sight mounting holes on the left side of the receiver. The slots on the mounting plate allow for variations in the height of receiver wall between manufacturers.